Defend the Realm by Christopher AndrewThe Puzzle Palace by James BamfordIntelligence Wars by Thomas PowersThe American Black Chamber by Herbert O. YardleyChatter by Patrick Radden Keefe
Espionage
985 books — 1,020 voters
Battle Cry of Freedom by James M. McPhersonEagle Against the Sun by Ronald H. SpectorA Savage War of Peace by Alistair HorneGhost Wars by Steve CollWar Comes to Garmser by Carter Malkasian
Best Non-fiction War Books
2,125 books — 2,361 voters

Tinker, Tailor, Soldier, Spy by John le CarréThe Tears of Autumn by Charles McCarryThe Company by Robert LittellThe Mask of Dimitrios by Eric AmblerThe Spy Who Came In from the Cold by John le Carré
Best Spy Novels
1,292 books — 2,253 voters