1 00:00:16,040 --> 00:00:17,280 {\an8}Where've you been? 2 00:00:19,720 --> 00:00:21,240 {\an8}Danny sent me home last night. 3 00:00:21,280 --> 00:00:23,200 {\an8}I'm sorry, I thought he told you. 4 00:00:25,120 --> 00:00:26,879 {\an8}OK, no problem. 5 00:00:26,880 --> 00:00:30,280 {\an8}So, as you know, we've been asked to recheck the BT malware. 6 00:00:30,800 --> 00:00:32,280 {\an8}I'd like you to do a strings. 7 00:00:33,000 --> 00:00:34,720 {\an8}What, just pull all the text? 8 00:00:34,760 --> 00:00:37,200 {\an8}Yeah. That's right, and go through it. 9 00:00:37,800 --> 00:00:40,559 {\an8}You know, passwords, hash types? 10 00:00:40,560 --> 00:00:42,160 {\an8}See if we missed anything. 11 00:00:42,200 --> 00:00:44,480 {\an8}Look, if this is my fault I'm really sorry. I was... 12 00:00:44,520 --> 00:00:45,719 {\an8}It's fine. 13 00:00:45,720 --> 00:00:49,600 {\an8}Someone needs to do the strings. You're here on work experience. 14 00:00:49,640 --> 00:00:51,919 {\an8}Or do you think you're too grand to do it? 15 00:00:51,920 --> 00:00:54,600 {\an8}No, of course not. 16 00:00:54,640 --> 00:00:56,800 {\an8}Good. Well, off you go then. 17 00:01:47,040 --> 00:01:48,920 {\an8}Options for an Offensive Cyber response. 18 00:01:48,960 --> 00:01:53,160 {\an8}With respect, Prime Minister, can I say that GCHQ opposes 19 00:01:53,200 --> 00:01:56,440 the use of OC in a situation of this kind? 20 00:01:56,840 --> 00:01:57,919 Why? 21 00:01:57,920 --> 00:02:01,679 Because of the law of unintended consequences. 22 00:02:01,680 --> 00:02:04,520 We close down part of Russia's electricity grid 23 00:02:04,560 --> 00:02:06,680 but it turns out it also supplies a hospital. 24 00:02:06,720 --> 00:02:09,080 They broadcast pictures of patients dying and... 25 00:02:09,120 --> 00:02:11,640 Offensive Cyber is an attack on a country, 26 00:02:11,680 --> 00:02:13,279 just like in any other domain of conflict. 27 00:02:13,280 --> 00:02:18,200 And it's very, very dangerous as... With respect, we are proving here. 28 00:02:18,240 --> 00:02:19,920 They take out parts of our infrastructure. 29 00:02:19,960 --> 00:02:22,319 We retaliate, attack one of their systems. 30 00:02:22,320 --> 00:02:24,999 They hit us again, this time a more critical target. 31 00:02:25,000 --> 00:02:27,240 We up the stakes another notch and, before you know it, 32 00:02:27,280 --> 00:02:31,239 we're into a cycle of escalation and a catastrophic loss of life. 33 00:02:31,240 --> 00:02:32,920 So what do you suggest we do? 34 00:02:33,840 --> 00:02:36,800 Expel more diplomats, like we did after Novichok? 35 00:02:36,840 --> 00:02:38,680 Look how much good that did. 36 00:02:38,720 --> 00:02:40,840 They're playground bullies. 37 00:02:40,880 --> 00:02:43,199 We need to hit back in a language they understand. 38 00:02:43,200 --> 00:02:46,760 If we do nothing, they'll just come back at us harder next time. 39 00:02:48,680 --> 00:02:49,960 Options. 40 00:02:54,640 --> 00:02:59,240 Well, we could turn off SWIFT to all their banks. 41 00:02:59,280 --> 00:03:00,560 That might be quite appropriate, 42 00:03:00,600 --> 00:03:04,120 given the impact of their attacks on our cash machines. 43 00:03:04,160 --> 00:03:05,320 No. 44 00:03:06,680 --> 00:03:12,960 OK. Well, we could take control of Putin's car briefly. 45 00:03:13,000 --> 00:03:18,160 Flash the lights, accelerate and decelerate, that kind of thing. 46 00:03:18,200 --> 00:03:20,319 - You can do that? - Oh, yes. 47 00:03:20,320 --> 00:03:26,159 We could also drop his plane 20,000 feet mid-flight. 48 00:03:26,160 --> 00:03:31,480 As a demonstration of power, that might be quite effective. 49 00:03:31,520 --> 00:03:36,760 Though they would almost certainly target our leadership in response. 50 00:03:37,920 --> 00:03:40,520 No. What else? 51 00:03:43,760 --> 00:03:48,360 I suppose we could fry all the lines into Glavset. 52 00:03:48,400 --> 00:03:50,800 - Into what? - Glavset. 53 00:03:50,840 --> 00:03:55,960 It's the source of most of Russia's Twitter propaganda aimed at the UK. 54 00:03:56,000 --> 00:03:58,200 We could shut it down. 55 00:03:59,240 --> 00:04:01,320 How long would that take? 56 00:04:01,360 --> 00:04:04,880 Er, well, we'd have to create the exploit first, 57 00:04:04,920 --> 00:04:07,160 so seven, maybe eight days. 58 00:04:07,520 --> 00:04:08,680 Eight days? 59 00:04:13,320 --> 00:04:15,080 OK, do it. 60 00:04:42,680 --> 00:04:44,760 I'm sorry, I've got to take a break. 61 00:04:44,800 --> 00:04:46,320 Can't keep my eyes open. 62 00:04:47,440 --> 00:04:48,560 OK. 63 00:04:50,200 --> 00:04:51,360 Don't be long. 64 00:05:09,360 --> 00:05:10,440 Can I? 65 00:05:11,760 --> 00:05:13,400 Sure, why not? 66 00:05:19,720 --> 00:05:20,960 You OK? 67 00:05:22,440 --> 00:05:24,160 Just got to wake myself up. 68 00:05:28,360 --> 00:05:30,760 - What is it? - It's an energy drink. 69 00:05:37,000 --> 00:05:38,080 Oh! 70 00:05:38,960 --> 00:05:40,160 Sweet. 71 00:05:40,200 --> 00:05:42,640 It's a quick hit. It'll keep you going. 72 00:05:46,800 --> 00:05:50,360 So who is he? The old man you keep staring at? 73 00:05:53,120 --> 00:05:55,000 Did they show you Jive? 74 00:05:55,040 --> 00:05:55,999 What? 75 00:05:56,000 --> 00:05:58,880 It's kind of an in-house Facebook. 76 00:05:58,920 --> 00:06:00,960 Well, he writes a blog for it every week. 77 00:06:01,000 --> 00:06:03,680 Correcting the grammar in everyone else's posts. 78 00:06:04,440 --> 00:06:05,920 - What? - Yeah. 79 00:06:05,960 --> 00:06:08,119 - No way. - I'm not shitting you. 80 00:06:08,120 --> 00:06:09,879 That's what he's doing right now. 81 00:06:09,880 --> 00:06:12,280 Just sitting there correcting our mistakes. 82 00:06:13,080 --> 00:06:15,200 That is one sad fucker. 83 00:06:20,360 --> 00:06:23,480 You're that student who found the second malware, right? 84 00:06:25,320 --> 00:06:26,640 Congratulations. 85 00:06:28,160 --> 00:06:29,280 Not really. 86 00:06:29,880 --> 00:06:31,080 Oh. 87 00:06:31,120 --> 00:06:33,560 I thought that you were the golden girl? 88 00:06:33,600 --> 00:06:35,320 Yeah, 'were' is right. 89 00:06:37,080 --> 00:06:40,560 Apparently, finding that code just made everyone else look bad. 90 00:06:40,600 --> 00:06:44,600 So, now we've got to start again and everyone in my department hates me. 91 00:06:46,000 --> 00:06:48,080 Well, maybe they're just jealous? 92 00:06:49,760 --> 00:06:51,240 No, really. 93 00:07:37,400 --> 00:07:38,840 What have you found? 94 00:07:43,680 --> 00:07:45,920 Some of this text is encrypted. 95 00:07:46,560 --> 00:07:48,880 That's OK. They do that sometimes. 96 00:07:53,280 --> 00:07:57,160 It's probably just a bit of random text that's got pasted in by mistake. 97 00:07:59,280 --> 00:08:01,840 But shouldn't we check, to be safe? 98 00:08:02,320 --> 00:08:03,440 Get it decrypted? 99 00:08:03,480 --> 00:08:05,680 Can't. Not without the key. 100 00:08:07,200 --> 00:08:11,040 Surely GCHQ can crack encryption without a key. 101 00:08:11,080 --> 00:08:12,520 Isn't that what we do here? 102 00:08:14,200 --> 00:08:15,880 It's part of what we do. 103 00:08:17,400 --> 00:08:18,760 So who does that? 104 00:08:18,800 --> 00:08:21,880 The mathematicians. But you'd be wasting your time. 105 00:08:22,840 --> 00:08:24,559 Why? 106 00:08:24,560 --> 00:08:28,240 Sorry, I just want to understand, for the future. 107 00:08:28,280 --> 00:08:30,679 Because it would be a huge commitment of resources. 108 00:08:30,680 --> 00:08:32,720 And they wouldn't think it was worth it. 109 00:08:33,440 --> 00:08:35,840 Just for this little bit of encrypted text? 110 00:08:36,440 --> 00:08:37,639 That's right. 111 00:08:37,640 --> 00:08:39,600 OK, thanks for explaining. 112 00:08:39,640 --> 00:08:41,040 No problem. 113 00:08:44,880 --> 00:08:48,959 But if I happened to know a mathematician, here, in the building, 114 00:08:48,960 --> 00:08:52,439 would you mind if I could persuade him to take a look? 115 00:08:52,440 --> 00:08:55,280 No, but he won't. And he'd be right. 116 00:08:55,320 --> 00:08:58,800 It's not a priority. And it's not what we've asked you to do. 117 00:09:21,720 --> 00:09:23,400 Can I take this chair? 118 00:09:33,840 --> 00:09:34,960 Thank you. 119 00:09:46,040 --> 00:09:48,720 Don't people hate having their grammar corrected? 120 00:09:50,360 --> 00:09:51,240 Mm. 121 00:09:51,280 --> 00:09:53,520 Doesn't it just make everyone hate you? 122 00:09:54,760 --> 00:09:58,880 If we wrote code as sloppily as we write English, it would never run. 123 00:09:58,920 --> 00:10:02,320 "Some things," "somethings" have to be right. 124 00:10:07,800 --> 00:10:09,600 Is that all you're having? 125 00:10:13,880 --> 00:10:15,160 I'm Muslim. 126 00:10:15,200 --> 00:10:19,600 They don't have anything halal here. And I don't like vegetables. 127 00:10:21,760 --> 00:10:25,920 I'm looking for a mathematician friend but he isn't here. 128 00:10:27,280 --> 00:10:31,360 Can you tell me where they work, the mathematicians? 129 00:10:33,040 --> 00:10:34,400 I'm new here. 130 00:10:36,920 --> 00:10:38,639 I'll show you if you like. 131 00:10:38,640 --> 00:10:42,200 But I warn you, they won't be very welcoming. 132 00:10:44,120 --> 00:10:45,280 What's funny? 133 00:10:45,840 --> 00:10:47,840 "They won't be very welcoming." 134 00:10:47,880 --> 00:10:49,960 No different to any other department here then? 135 00:10:50,000 --> 00:10:52,520 No different "from" any other department. 136 00:10:52,560 --> 00:10:55,320 It's "different from, compared with." 137 00:10:59,840 --> 00:11:02,040 Have you worked here a long time? 138 00:11:02,680 --> 00:11:04,080 Here and before. 139 00:11:04,480 --> 00:11:05,400 Before? 140 00:11:05,440 --> 00:11:08,840 Before we were in this, this doughnut. 141 00:11:11,320 --> 00:11:14,080 Was it very different "from" now? 142 00:11:14,120 --> 00:11:16,080 It was. 143 00:11:19,240 --> 00:11:21,080 I'd like to have seen that. 144 00:11:26,280 --> 00:11:28,080 I can show you if you like. 145 00:11:30,680 --> 00:11:32,359 OK. 146 00:11:32,360 --> 00:11:36,520 You wanted to see the mathematicians. This is it. Cryptology. 147 00:11:42,400 --> 00:11:46,400 By the way, we don't ask where departments are at GCHQ, 148 00:11:46,440 --> 00:11:48,720 especially Cryptology. 149 00:11:49,400 --> 00:11:53,880 You know, security and all that. 150 00:11:55,160 --> 00:11:57,040 But I won't tell if you don't. 151 00:12:00,320 --> 00:12:03,480 If you do want to see the old HQ, let me know. 152 00:12:18,160 --> 00:12:21,440 Hello. Erm, sorry to interrupt. 153 00:12:21,480 --> 00:12:24,160 Is there anyone here called Gabriel? 154 00:12:29,080 --> 00:12:32,040 What do you want? I'm busy. 155 00:12:46,040 --> 00:12:48,360 Do you really still use this stuff? 156 00:12:48,400 --> 00:12:51,360 We don't have whiteboards. Too noisy. 157 00:12:53,800 --> 00:12:55,400 You shouldn't be here. 158 00:13:05,800 --> 00:13:06,960 What is it? 159 00:13:08,000 --> 00:13:10,799 It's encrypted text. From a malware string. 160 00:13:10,800 --> 00:13:14,360 Encrypted strings pop up all the time. It doesn't mean anything. 161 00:13:15,040 --> 00:13:17,040 That's what they told me you'd say. 162 00:13:20,480 --> 00:13:22,600 Come on, Gabriel. 163 00:13:22,640 --> 00:13:25,880 Encrypted text from a piece of malware we haven't seen before? 164 00:13:26,720 --> 00:13:29,440 It must be worth a look, surely? 165 00:13:36,520 --> 00:13:37,640 Please. 166 00:13:41,400 --> 00:13:43,760 I can't make any promises. 167 00:13:43,800 --> 00:13:47,280 We're busy. We may decide it's not worth the time and resources. 168 00:13:47,320 --> 00:13:48,600 Are you saying you can't do it? 169 00:13:48,640 --> 00:13:52,120 No. I'm saying it might not be worth the time and resources. 170 00:13:56,600 --> 00:13:57,840 Thank you. 171 00:14:01,680 --> 00:14:02,840 Whiteboards. 172 00:14:04,120 --> 00:14:07,839 Too noisy as in too bright, right? 173 00:14:07,840 --> 00:14:11,000 Of course. What else could it mean? 174 00:14:28,960 --> 00:14:31,440 Oh, Allah. Forgive Ahmed Parvin. 175 00:14:31,480 --> 00:14:35,400 And elevate his station amongst those who are guided. 176 00:14:35,440 --> 00:14:38,479 Send him along the path of those who came before. 177 00:14:38,480 --> 00:14:42,040 And forgive him and have mercy on him. 178 00:14:42,080 --> 00:14:45,080 And make him steadfast and harden him. 179 00:14:45,120 --> 00:14:49,599 Be generous to him, and cleanse him of his transgressions, 180 00:14:49,600 --> 00:14:52,440 as a white cloth cleansed of stains. 181 00:15:21,440 --> 00:15:23,240 Saara! Saara, no. 182 00:15:25,560 --> 00:15:27,040 Ami. Come. 183 00:15:36,360 --> 00:15:37,840 Bye-bye, Abu. 184 00:15:52,160 --> 00:15:53,920 Hi, we're gonna need to search your bag. 185 00:15:53,960 --> 00:15:55,560 - Sure. - Harriet? 186 00:15:57,240 --> 00:15:59,719 Have you haven't heard? 187 00:16:01,040 --> 00:16:02,720 {\an8}Can you help save the planet? 188 00:16:27,240 --> 00:16:28,360 James. 189 00:16:30,400 --> 00:16:31,560 How was it? 190 00:16:32,920 --> 00:16:34,760 Oh, no. Come here. 191 00:16:37,240 --> 00:16:39,040 Don't. Please. 192 00:16:42,600 --> 00:16:43,920 Lunch is served. 193 00:16:48,440 --> 00:16:52,680 OK, anyone saying thank you? Thank you? 194 00:16:52,720 --> 00:16:55,600 - Thank you. - Thank you. 195 00:17:01,880 --> 00:17:03,080 What's wrong? 196 00:17:05,840 --> 00:17:08,280 Are you allowed to bring your class here? 197 00:17:11,320 --> 00:17:12,760 Am I allowed? 198 00:17:14,200 --> 00:17:15,600 Am I allowed? 199 00:17:18,720 --> 00:17:20,160 It's the weekend. 200 00:17:21,560 --> 00:17:25,160 I think it's, you know, think it's good that 201 00:17:25,200 --> 00:17:27,160 they know what's going on in the world. 202 00:17:29,120 --> 00:17:30,240 Isn't it? 203 00:17:34,720 --> 00:17:35,840 Is this it? 204 00:17:37,920 --> 00:17:40,479 Three words and some hexadecimal? 205 00:17:40,480 --> 00:17:42,160 Why? Were you expecting more? 206 00:17:43,160 --> 00:17:45,400 No. Er, I don't know. 207 00:17:46,680 --> 00:17:49,440 It's just... You've done it so quickly. 208 00:17:50,880 --> 00:17:52,040 It was weird. 209 00:17:53,160 --> 00:17:54,240 What? 210 00:17:55,400 --> 00:17:57,520 You've heard of trapdoor encryption? 211 00:17:58,480 --> 00:18:00,120 Is that what they used? 212 00:18:01,440 --> 00:18:04,239 There was a rope hanging down, through the trapdoor. 213 00:18:04,240 --> 00:18:07,440 Like it wanted me to climb up it. Like it wanted to be decrypted. 214 00:18:08,760 --> 00:18:09,840 And? 215 00:18:12,040 --> 00:18:15,240 Eagles summer stages, that's what it says. 216 00:18:15,280 --> 00:18:16,960 Plus some hexadecimal. 217 00:18:18,800 --> 00:18:21,159 - What does it mean? - I don't know. 218 00:18:21,160 --> 00:18:24,560 And whatever you're up to, I don't want to be involved. Ever. 219 00:18:50,560 --> 00:18:52,120 OK, Finn, let it loose. 220 00:19:19,880 --> 00:19:23,160 Well done. Now we wait. 221 00:20:58,280 --> 00:21:01,119 I think the hexadecimal's a date and time. 222 00:21:01,120 --> 00:21:03,520 I wondered if the words meant anything to you. 223 00:21:06,360 --> 00:21:07,800 Where did you find this? 224 00:21:10,080 --> 00:21:12,400 Hidden in the malware strings. 225 00:21:12,440 --> 00:21:15,560 I got one of the mathematicians to decrypt it for me. 226 00:21:15,600 --> 00:21:19,600 Saara, you do know that you shouldn't be talking to me about this, right? 227 00:21:19,640 --> 00:21:22,080 I'm not cleared for the things that you're working on. 228 00:21:22,120 --> 00:21:25,840 I know, but I just need a bit of help. 229 00:21:30,360 --> 00:21:31,440 Sit. 230 00:21:41,400 --> 00:21:42,640 I already did this. 231 00:21:43,960 --> 00:21:45,040 OK. 232 00:21:46,080 --> 00:21:48,040 Have you tried What3words? 233 00:21:49,240 --> 00:21:52,519 So, three apparently random words can be used to identify 234 00:21:52,520 --> 00:21:55,040 a three-metre square anywhere on the planet. 235 00:21:56,200 --> 00:21:59,400 Your three words are inside... 236 00:21:59,440 --> 00:22:01,880 Harrogate Conference Centre. 237 00:22:04,040 --> 00:22:05,680 You said that you had a date? 238 00:22:06,720 --> 00:22:09,960 The 28th of April, 9:30 a.m. 239 00:22:14,080 --> 00:22:15,240 Oh, my God. 240 00:22:16,080 --> 00:22:18,359 It's Cyber World. 241 00:22:18,360 --> 00:22:21,960 It's right in the middle of the Cyber World conference. 242 00:22:22,000 --> 00:22:23,880 That can't be a coincidence. 243 00:22:25,040 --> 00:22:27,879 What does this mean? I don't understand. 244 00:22:27,880 --> 00:22:30,760 You said that this was encrypted inside the BT malware? 245 00:22:30,800 --> 00:22:31,880 Yeah. 246 00:22:32,760 --> 00:22:36,440 Well you have a date, a time and a place. 247 00:22:36,480 --> 00:22:39,200 It looks like someone's sending us an invitation. 248 00:22:53,600 --> 00:22:55,520 I think it's one of their coders. 249 00:22:56,280 --> 00:22:57,680 Trying to reach out. 250 00:23:02,360 --> 00:23:04,280 What do Max and Phil think about this? 251 00:23:07,200 --> 00:23:08,440 I haven't told them. 252 00:23:10,200 --> 00:23:13,640 - I wanted to crack it first... - Sorry, just to be clear. 253 00:23:13,680 --> 00:23:14,960 You're working in malware 254 00:23:15,000 --> 00:23:17,480 and you haven't told your head of department what you're doing? 255 00:23:18,320 --> 00:23:20,000 Phil agreed to me getting it decrypted. 256 00:23:20,040 --> 00:23:23,040 Yes, but you haven't told them what you've found? 257 00:23:23,080 --> 00:23:25,200 You've gone over their heads to me? 258 00:23:28,160 --> 00:23:30,120 You're on a work placement! 259 00:23:31,160 --> 00:23:32,720 Apart from anything else, have you considered 260 00:23:32,760 --> 00:23:35,720 how incredibly disrespectful that is to Max and Phil? 261 00:23:37,440 --> 00:23:39,919 No, truthfully, I hadn't. 262 00:23:39,920 --> 00:23:42,360 What's your involvement in this? 263 00:23:44,400 --> 00:23:47,800 Well, you know, we've been trying to track down the coders 264 00:23:47,840 --> 00:23:50,560 and if this is a message from one of them... 265 00:23:59,040 --> 00:24:00,960 OK, what do you suggest we do about it? 266 00:24:01,600 --> 00:24:03,480 - Me? - Yes, you. 267 00:24:05,880 --> 00:24:08,400 I think someone should go to Harrogate. 268 00:24:08,440 --> 00:24:09,960 Me, if no one else will. 269 00:24:16,160 --> 00:24:17,240 OK. 270 00:24:17,960 --> 00:24:20,120 - "OK?" - You can go. 271 00:24:23,000 --> 00:24:24,120 No way! 272 00:24:26,960 --> 00:24:28,440 I want you to go with her, OK? 273 00:24:28,480 --> 00:24:30,680 If it's Cyber World, the FSB are gonna be there. 274 00:24:30,720 --> 00:24:34,680 It's likely one of their provocations. It's got all the hallmarks. 275 00:24:34,720 --> 00:24:36,880 And make sure you update Max and Phil. 276 00:24:56,120 --> 00:24:58,360 She probably thinks we're on a date. 277 00:25:00,400 --> 00:25:02,000 Or that I'm your carer. 278 00:25:17,400 --> 00:25:19,360 It's back up. Glavset. 279 00:25:19,400 --> 00:25:21,080 Yeah. Afraid so. 280 00:25:21,120 --> 00:25:24,080 So how long did we manage to take them down for? 281 00:25:24,120 --> 00:25:26,000 About 21 hours. 282 00:25:26,040 --> 00:25:27,200 Unbelievable. 283 00:25:28,440 --> 00:25:30,839 And still no sign of a reprisal? 284 00:25:30,840 --> 00:25:33,640 No, nothing, not even a polite complaint. 285 00:25:33,680 --> 00:25:35,560 Makes us look a bit foolish, doesn't it? 286 00:25:35,600 --> 00:25:39,679 All our dire warnings about the escalatory nature of offensive cyber. 287 00:25:39,680 --> 00:25:42,639 Well, no, maybe they were smarter than we realised, you know? 288 00:25:42,640 --> 00:25:45,720 Russia's never acknowledged the existence of Glavset. 289 00:25:45,760 --> 00:25:47,280 How can you complain about an attack 290 00:25:47,320 --> 00:25:49,600 on an organisation that doesn't officially exist? 291 00:25:49,640 --> 00:25:50,720 Hmm. 292 00:26:26,800 --> 00:26:28,280 What was this? 293 00:26:29,360 --> 00:26:30,560 Canteen. 294 00:26:42,920 --> 00:26:48,000 And no meat, because you don't, you know... 295 00:26:49,520 --> 00:26:50,640 Thank you. 296 00:26:55,680 --> 00:27:00,120 Why did you... Why did you choose to work here in the first place? 297 00:27:01,120 --> 00:27:03,320 Here at GCHQ? 298 00:27:03,360 --> 00:27:05,360 Er, Mum and Dad worked here. 299 00:27:06,520 --> 00:27:10,360 GCHQ's a family business, always has been. 300 00:27:10,400 --> 00:27:12,120 So, they met here? 301 00:27:12,160 --> 00:27:14,320 Here, no. At Bletchley. 302 00:27:14,960 --> 00:27:18,360 During the war. Hut 6. 303 00:27:18,400 --> 00:27:19,760 - Really? - Mmhmm. 304 00:27:20,600 --> 00:27:25,440 Yes, if it weren't for GCHQ, I wouldn't exist. 305 00:27:33,840 --> 00:27:36,240 I haven't told my family where I work. 306 00:27:37,920 --> 00:27:40,560 Really? You can now, I think. 307 00:27:40,600 --> 00:27:43,800 Well, I know but they wouldn't understand. 308 00:27:44,880 --> 00:27:47,320 Well, my dad did but he died. 309 00:27:53,120 --> 00:27:54,680 You remind me of him. 310 00:28:10,960 --> 00:28:13,759 'Course, back in the day, we didn't have emails 311 00:28:13,760 --> 00:28:17,160 or bloody iPhones. We had Lamson tubes. 312 00:28:17,800 --> 00:28:18,960 What's that? 313 00:28:20,720 --> 00:28:25,840 An old network of pneumatic tubes all over the place. 314 00:28:27,400 --> 00:28:30,680 Did you know, if you wanted to send a document, 315 00:28:30,720 --> 00:28:32,600 do you know what you did with it? 316 00:28:32,640 --> 00:28:34,040 You rolled it up. 317 00:28:35,680 --> 00:28:37,040 Put it in a carrier. 318 00:28:37,080 --> 00:28:41,920 It could be anywhere, anywhere in all these buildings. Two minutes tops. 319 00:28:42,440 --> 00:28:43,520 Marvellous. 320 00:28:43,560 --> 00:28:49,040 Absolute marvellous piece of engineering, really. 321 00:28:51,760 --> 00:28:53,880 It was about the size of that can. 322 00:28:54,680 --> 00:28:57,840 Perfect for chocolate eclairs. 323 00:28:57,880 --> 00:28:59,680 - Oh, yeah? - Oh, yes. 324 00:29:00,480 --> 00:29:02,840 Stern memos were sent. 325 00:29:02,880 --> 00:29:08,600 "Personal use of the Lamson tube is not permitted!" 326 00:29:12,960 --> 00:29:16,479 It was how I proposed to my wife. 327 00:29:16,480 --> 00:29:17,640 No way! 328 00:29:18,200 --> 00:29:19,319 Did she reply? 329 00:29:19,320 --> 00:29:22,800 Oh, no. She... She said she'd think about it. 330 00:29:24,000 --> 00:29:27,159 So you didn't go down on bended knee then? 331 00:29:27,160 --> 00:29:28,680 No, no. I'm... 332 00:29:29,080 --> 00:29:31,680 Far... Far too shy. 333 00:29:32,120 --> 00:29:33,840 Do you... No, you don't. 334 00:29:59,840 --> 00:30:02,840 It didn't last, of course. She left me. 335 00:30:02,880 --> 00:30:04,320 I don't blame her. 336 00:30:06,560 --> 00:30:10,760 We could never really talk about anything, what we were doing. 337 00:30:12,600 --> 00:30:14,280 But you both worked here? 338 00:30:15,400 --> 00:30:19,920 Surely she was the only type of person you could talk to? 339 00:30:19,960 --> 00:30:21,680 Different departments. 340 00:30:21,720 --> 00:30:25,600 "Compartmentation," they call it. 341 00:30:26,360 --> 00:30:29,040 Can't talk about what you're doing. 342 00:30:32,240 --> 00:30:34,280 Destroys relationships. 343 00:30:37,760 --> 00:30:39,280 If you're not careful. 344 00:30:44,160 --> 00:30:49,000 Funny, I used to think of people here as my family. 345 00:30:52,040 --> 00:30:53,120 They... 346 00:30:53,160 --> 00:30:55,120 They seemed like family. 347 00:30:57,800 --> 00:30:59,360 But they weren't. 348 00:31:03,840 --> 00:31:05,520 Not my real family. 349 00:31:07,960 --> 00:31:10,320 You have to take care of your real family. 350 00:31:22,080 --> 00:31:23,200 Choose. 351 00:31:34,560 --> 00:31:35,680 James? 352 00:31:51,840 --> 00:31:52,999 Katy? 353 00:31:53,000 --> 00:31:54,120 - Hi! - Hi, erm... 354 00:31:54,160 --> 00:31:55,320 Do you know where James is? 355 00:31:55,360 --> 00:31:58,360 Yeah. He's, er, behind the band, round the corner there. 356 00:32:06,480 --> 00:32:07,600 Are you Saara? 357 00:32:07,640 --> 00:32:09,920 Yeah. Is James here? 358 00:32:10,600 --> 00:32:11,720 Come on in. 359 00:32:37,160 --> 00:32:38,760 Thanks. 360 00:32:38,800 --> 00:32:41,640 - Where's your coat? - What were you doing? 361 00:32:43,440 --> 00:32:46,200 We were just training. For if we get arrested. 362 00:32:50,440 --> 00:32:51,560 OK, er... 363 00:32:52,600 --> 00:32:55,080 OK. What is it, Saara? What's the problem? 364 00:32:56,440 --> 00:32:58,040 I'm worried about your job. 365 00:32:58,920 --> 00:33:00,159 OK. 366 00:33:00,160 --> 00:33:02,960 It's an illegal protest and you're bringing your class down here. 367 00:33:03,520 --> 00:33:05,080 Does the school know? 368 00:33:05,720 --> 00:33:07,920 You're not a student any more, James. 369 00:33:10,520 --> 00:33:12,320 No, I know I'm not a student. 370 00:33:14,000 --> 00:33:17,520 Any more, but are you sure it's not your job we're talking about here? 371 00:33:21,360 --> 00:33:23,520 Yeah, yeah, that's part of it. 372 00:33:23,720 --> 00:33:24,920 OK. 373 00:33:24,960 --> 00:33:26,120 Did you know that most of the questions 374 00:33:26,160 --> 00:33:28,920 I got asked at my vetting interview were about you? 375 00:33:30,440 --> 00:33:31,600 Your politics. 376 00:33:32,880 --> 00:33:34,920 Are you trying to get me into trouble? 377 00:33:34,960 --> 00:33:36,040 No. 378 00:33:36,920 --> 00:33:38,360 No, of course not. 379 00:33:42,000 --> 00:33:45,760 What are you saying? That you can't work there and have political views? 380 00:33:50,680 --> 00:33:55,400 Because I don't know about you but I think this is quite important. 381 00:33:55,440 --> 00:33:58,080 Whether the kids that I teach will have a future on this planet. 382 00:33:58,120 --> 00:34:01,600 Whether the kids you and I might have one day will have a future on this planet. 383 00:34:01,640 --> 00:34:03,720 Isn't that more important than your job? 384 00:34:04,880 --> 00:34:07,560 Or my job? Or any job, actually? 385 00:34:12,000 --> 00:34:13,160 What is it? 386 00:34:17,240 --> 00:34:18,360 I'm... 387 00:34:21,720 --> 00:34:25,160 I'm really not thinking about having kids with you, James. 388 00:34:28,120 --> 00:34:30,520 I'm not. I'm sorry. 389 00:34:37,600 --> 00:34:41,280 So, the surface of revolution... 390 00:34:42,360 --> 00:34:47,960 is a surface defined by 391 00:34:48,000 --> 00:34:52,160 z equals capital H of r. 392 00:34:52,680 --> 00:34:54,360 We need to underline that. 393 00:34:54,400 --> 00:34:57,240 Where r, z and theta are... 394 00:34:58,080 --> 00:34:59,200 Anyone? 395 00:35:00,840 --> 00:35:02,680 Cylindrical polar coordinates. 396 00:35:03,520 --> 00:35:05,039 Thank you, Saara. 397 00:35:05,040 --> 00:35:07,320 Well, I'm glad someone's listening. 398 00:35:10,440 --> 00:35:17,320 So, yes, are cylindrical polar coordinates. 399 00:35:18,160 --> 00:35:23,200 So, yes. So, z is the height coordinate. 400 00:35:23,240 --> 00:35:26,640 I can't believe you said that he should've written it out before the lesson! 401 00:35:26,680 --> 00:35:28,280 He definitely likes you. 402 00:35:28,320 --> 00:35:29,920 Why don't you ask him out? 403 00:35:31,160 --> 00:35:34,560 What? That's so gross, Vadim. 404 00:35:38,560 --> 00:35:42,199 Anyway, I can't. He's on the faculty. 405 00:35:42,200 --> 00:35:45,280 Ask him anyway. Life's too short. 406 00:35:53,280 --> 00:35:55,160 I couldn't believe it's you. 407 00:36:01,160 --> 00:36:03,280 - That was good today. - Yeah. 408 00:36:24,320 --> 00:36:25,880 Would you like a mask? 409 00:36:25,920 --> 00:36:27,760 We've got red ones, yellow ones. 410 00:36:28,920 --> 00:36:30,840 Thanks. For my partner. 411 00:36:31,920 --> 00:36:33,720 So who are you voting for? 412 00:36:35,160 --> 00:36:36,280 Ha-ha. 413 00:36:38,520 --> 00:36:39,640 Thanks. 414 00:36:40,000 --> 00:36:41,160 You're welcome. 415 00:36:56,440 --> 00:36:58,199 Georgia Henderson? 416 00:36:58,200 --> 00:37:00,760 GCHQ don't like us to use our real names. 417 00:37:04,280 --> 00:37:06,239 OK. 418 00:37:06,240 --> 00:37:09,720 Well, let's find the place. So we're all set for tomorrow. 419 00:37:22,880 --> 00:37:25,000 Here? Really? 420 00:37:25,680 --> 00:37:26,760 Yeah. 421 00:37:36,600 --> 00:37:38,280 Do you wanna decompress? 422 00:37:40,880 --> 00:37:42,160 Sure. 423 00:37:48,240 --> 00:37:50,200 Oh. 424 00:37:50,240 --> 00:37:53,319 Don't judge me, all right, it's a problem. 425 00:37:53,320 --> 00:37:54,880 I'm not. 426 00:37:54,920 --> 00:37:57,880 I've actually always wished I was a messy person. 427 00:37:57,920 --> 00:37:59,159 What? 428 00:37:59,160 --> 00:38:01,240 You know my ex's apartment was this, 429 00:38:01,280 --> 00:38:03,960 this beautiful, minimalist nightmare 430 00:38:04,000 --> 00:38:08,320 and if I left anything of mine out she had it gone in, like, nano-seconds. 431 00:38:08,360 --> 00:38:10,200 That sounds passive aggressive to me. 432 00:38:10,240 --> 00:38:13,680 - Tidying away the evidence of your existence. - Huh. 433 00:38:14,880 --> 00:38:17,400 You know what? You're exactly right. 434 00:38:20,720 --> 00:38:23,400 You're more perceptive than I give you credit for. 435 00:38:26,320 --> 00:38:27,520 Can I have one? 436 00:38:28,880 --> 00:38:30,240 I thought you don't drink? 437 00:38:31,160 --> 00:38:32,240 I don't. 438 00:38:45,520 --> 00:38:46,680 Careful now. 439 00:38:47,400 --> 00:38:48,520 Shut up. 440 00:38:56,640 --> 00:38:57,960 Right on time. 441 00:38:59,000 --> 00:39:00,360 Dad! 442 00:39:00,400 --> 00:39:03,159 Yeah, I know, I know, I was at dinner. 443 00:39:03,160 --> 00:39:06,920 No, I did not have a Yorkshire pudding, Dad, 444 00:39:06,960 --> 00:39:10,040 but good job on the research. Maybe next time. 445 00:39:12,360 --> 00:39:14,880 Look, I gotta go, OK? 446 00:39:21,240 --> 00:39:22,360 Yeah. 447 00:39:22,880 --> 00:39:24,160 Night, Dad. 448 00:39:25,920 --> 00:39:27,280 I love you, too. 449 00:39:32,320 --> 00:39:33,760 Sorry about that. 450 00:39:33,800 --> 00:39:37,080 He always gets through to me, even when I was in Iraq. 451 00:39:40,880 --> 00:39:42,480 Have I said something wrong? 452 00:39:44,800 --> 00:39:45,920 No. No... 453 00:39:51,040 --> 00:39:52,640 Then tell me. 454 00:39:57,200 --> 00:39:58,320 It's just... 455 00:40:01,360 --> 00:40:03,440 My dad died... 456 00:40:04,120 --> 00:40:05,279 Recently, actually. 457 00:40:05,280 --> 00:40:07,639 Fuck. I'm... I'm so sorry. 458 00:40:07,640 --> 00:40:11,440 - Sorry, I'm such a dick. - No, honestly, it's fine. 459 00:40:11,480 --> 00:40:14,520 It's great you've got such a good relationship with your dad. 460 00:40:17,760 --> 00:40:22,760 There was an accident... a few days ago. 461 00:40:24,920 --> 00:40:28,399 He was a train driver. He was on the tracks 462 00:40:28,400 --> 00:40:29,720 and he was hit by a train. 463 00:40:30,000 --> 00:40:31,360 Oh, fuck. 464 00:40:32,000 --> 00:40:34,160 That's according to my family anyway. 465 00:40:35,080 --> 00:40:37,920 What, you think that it might have been deliberate? 466 00:40:44,960 --> 00:40:46,560 He was difficult. 467 00:40:50,000 --> 00:40:52,400 Unusual, not difficult. 468 00:40:55,280 --> 00:40:58,400 I was the only one who really understood him. 469 00:41:01,200 --> 00:41:02,720 He was dependent on me. 470 00:41:03,520 --> 00:41:05,200 Quite heavily dependent. 471 00:41:07,160 --> 00:41:11,159 He had bouts of depression when I was growing up. 472 00:41:11,160 --> 00:41:13,600 And I used to be the one who could make him laugh, 473 00:41:14,680 --> 00:41:16,240 get him out of a slump. 474 00:41:18,720 --> 00:41:21,560 And I went away and I just abandoned him... 475 00:41:23,640 --> 00:41:24,720 Hey. 476 00:41:27,320 --> 00:41:29,280 It's not your fault, OK? 477 00:41:30,880 --> 00:41:33,039 You know, my dad's a cop. 478 00:41:33,040 --> 00:41:35,960 And he was under the towers on 9/11. 479 00:41:36,640 --> 00:41:38,520 And he lost most of his friends, 480 00:41:39,680 --> 00:41:42,200 you know, guys that he'd known since school. 481 00:41:43,280 --> 00:41:45,400 And he was really fucked up by it, 482 00:41:46,840 --> 00:41:48,200 I mean we all were... 483 00:41:49,720 --> 00:41:52,200 And he needed support too. 484 00:41:52,240 --> 00:41:58,240 But, in the end, I still went away, Saara. I still got on with my life. 485 00:41:59,400 --> 00:42:01,480 But you talk to him every day, 486 00:42:01,520 --> 00:42:03,880 even when you were in fucking Iraq. 487 00:42:05,680 --> 00:42:07,120 I ignored mine. 488 00:42:09,320 --> 00:42:10,520 I cut him out. 489 00:42:10,920 --> 00:42:12,480 Saara, he loved you. 490 00:42:13,760 --> 00:42:15,560 He loved you. 491 00:42:15,600 --> 00:42:17,560 All right? I'm sure he understood. 492 00:42:18,600 --> 00:42:21,400 Yeah, you're right. 493 00:42:21,440 --> 00:42:24,680 He understood perfectly, that's the point. 494 00:42:25,840 --> 00:42:28,440 He threw himself under a train, Kathy. 495 00:42:36,440 --> 00:42:37,560 Come here. 496 00:42:47,280 --> 00:42:49,000 It's going to be all right. 497 00:42:50,280 --> 00:42:51,920 You're going to be all right. 498 00:43:20,000 --> 00:43:22,200 It's not a good idea. 499 00:43:24,200 --> 00:43:26,000 Right, you're upset. 500 00:43:30,200 --> 00:43:31,680 I should go to bed. 501 00:43:37,040 --> 00:43:38,760 Yeah, me too. 502 00:43:38,800 --> 00:43:42,520 We've got some serious standing around to do tomorrow, so... 503 00:44:32,200 --> 00:44:33,320 Morning. 504 00:44:35,600 --> 00:44:36,720 Morning. 505 00:44:40,600 --> 00:44:43,919 Let's get this over with so I can get back to Danny's office and apologise. 506 00:44:43,920 --> 00:44:45,360 It's gonna be fine. 507 00:44:58,520 --> 00:44:59,680 One minute. 508 00:45:08,440 --> 00:45:10,280 I'm sorry about last night. 509 00:45:11,080 --> 00:45:13,600 I don't drink, you know? And... 510 00:45:13,640 --> 00:45:16,759 I guess it had more of an effect than I was expecting. 511 00:45:16,760 --> 00:45:20,440 It's great timing on this particular conversation starter, Saara. 512 00:45:23,160 --> 00:45:24,280 Go on. 513 00:46:24,240 --> 00:46:25,880 Thank you for coming. 514 00:46:25,920 --> 00:46:27,400 What do you want? 515 00:46:28,240 --> 00:46:29,600 Oh, sorry. 516 00:46:31,600 --> 00:46:32,720 Vadim? 517 00:46:33,280 --> 00:46:34,720 What are you doing here?