What Happened In Vienna, Jack? by Daniel   KempNight Soldiers by Alan FurstBerlin Noir by Philip KerrThe Riddle of the Sands by Erskine ChildersThe Mask of Dimitrios by Eric Ambler
Best prewar spy thrillers
23 books — 19 voters
Tinker, Tailor, Soldier, Spy by John Le CarréThe Spy Who Came In from the Cold by John Le CarréThe Bourne Identity by Robert LudlumThe Day of the Jackal by Frederick ForsythThe Hunt for Red October by Tom Clancy
Best Spy Novels
1,277 books — 2,235 voters