Related by context. Frequent words. (Click for all words.) 49 Alan Turing 47 cryptographer 46 cryptographers 43 cryptology 42 Turing 37 Le Carre 37 MI6 36 Mossad agent 36 Samuel Pepys 36 Scotland Yard detective 36 deciphered 36 Enigma 35 Bletchley Park 35 Figes 35 Conan Doyle 34 KGB agent 34 Makdessi 34 spy 33 MI5 33 fantasist 33 Schama 33 Chilcot Inquiry 33 Laurence Olivier 32 spies 32 Porton Down 32 spymasters 32 Roger Highfield 32 Mossad 32 Spy 32 spy thrillers 32 supergrass 32 CIA operative 32 Reacher 32 Stakeknife 32 Hutton inquiry 32 John le Carre 31 Chilcot inquiry 31 GCHQ 31 Declassified 31 butler 30 Nemesis 30 Secret Intelligence 30 Scotland Yard 30 Kazuo Ishiguro 30 Bloodhound 30 Scotland Yard detectives 30 Cryptography 30 Terry Pratchett 30 Ishiguro 30 amateur sleuth 30 Hatton 30 Voodoo Child 30 dodgy dossier 30 KGB 29 Winterson 29 Aldrich Ames 29 Patricia Highsmith 29 spy thriller 29 Chilcot 29 Raskolnikov 29 superspy 29 Wiesler 29 Pepys 29 John le Carré 29 covert ops 29 SPECTRE 29 Sibel Edmonds 29 Gus O'Donnell 29 NPIA 29 assassinate Hitler 29 Kensington Palace 29 Martland 29 Ian McEwan 29 Hilary Mantel 29 British 28 spy Alexander Litvinenko 28 Kureishi 28 Patrick O'Brian 28 Doris Lessing 28 declassified 28 Official Secrets Act 28 agent Alexander Litvinenko 28 AS Byatt 28 spymaster 28 Nearne 28 Fighter Pilot 28 Blomkvist 28 Nicole Krauss 28 MoD 28 Bourgass 28 Invader 28 Decoded 28 Philby 28 Sean Connery 27 Colm Toibin 27 Brownites 27 VS Naipaul 27 Ozick 27 Fewkes 27 Deepcut 27 Litvinenko