Books about Spy stories (sorted by popularity)
- The Lost Ambassador; Or, The Search For The Missing Delora E. Phillips Oppenheim 83 downloads
- Inside the Lines Earl Derr Biggers and Robert Welles Ritchie 83 downloads
- The Eagle's eye Courtney Ryley Cooper and William J. Flynn 80 downloads
- The Yellow Typhoon Harold MacGrath 80 downloads
- The Wireless Officer Percy F. Westerman 78 downloads
- The Cool War Andrew Fetler 78 downloads
- Okewood of the Secret Service Valentine Williams 78 downloads
- Her Majesty's Minister William Le Queux 77 downloads
- Ruth of the U. S. A. Edwin Balmer 77 downloads
- Eddie Frank Riley 76 downloads
- Zoraida: A Romance of the Harem and the Great Sahara William Le Queux 76 downloads
- Tubemonkey Jerome Bixby 74 downloads
- Sant of the Secret Service: Some Revelations of Spies and Spying William Le Queux 73 downloads
- Shot With Crimson George Barr McCutcheon 73 downloads
- A Boy Scout's Courage Edward Howard Griggs 72 downloads
- The emperor's candlesticks Baroness Emmuska Orczy Orczy 72 downloads
- The Double Spy Dan T. Moore 71 downloads
- The Men Who Wrought Ridgwell Cullum 70 downloads
- Brain Twister Randall Garrett and Laurence M. Janifer 70 downloads
- Clubfoot the Avenger Valentine Williams 70 downloads
- Over There with the Canadians at Vimy Ridge G. Harvey Ralphson 70 downloads
- I Spy Natalie Sumner Lincoln 70 downloads
- The Bomb-Makers William Le Queux 69 downloads
- Bernard Treves's Boots: A Novel of the Secret Service Laurence Clarke 68 downloads
- Affair in Araby Talbot Mundy 65 downloads