Books about Spy stories (sorted by popularity)
- Si Klegg, Book 3 John McElroy 110 downloads
- The Sinister Invasion Edmond Hamilton 107 downloads
- Bernard Treves's Boots: A Novel of the Secret Service Laurence Clarke 105 downloads
- The silent invaders Robert Silverberg 101 downloads
- The Weight of the Crown Fred M. White 100 downloads
- The Incomplete Theft Randall Garrett and Robert Silverberg 99 downloads
- Zoraida: A Romance of the Harem and the Great Sahara William Le Queux 99 downloads
- Brain Twister Randall Garrett and Laurence M. Janifer 99 downloads
- A Boy Scout's Courage Edward Howard Griggs 95 downloads
- The Passion for Life Joseph Hocking 93 downloads
- The Spy: The Story of a Superfluous Man Maksim Gorky 92 downloads
- Ruth of the U. S. A. Edwin Balmer 91 downloads
- Havoc E. Phillips Oppenheim 90 downloads
- The Man with the Clubfoot Valentine Williams 88 downloads
- The Double Spy Dan T. Moore 88 downloads
- A Maker of History E. Phillips Oppenheim 87 downloads
- The Spy: Condensed for use in schools James Fenimore Cooper 86 downloads
- The Traitors E. Phillips Oppenheim 86 downloads
- Shot With Crimson George Barr McCutcheon 85 downloads
- Submarine U93 Charles Gilson 85 downloads
- The Eagle's eye Courtney Ryley Cooper and William J. Flynn 83 downloads
- A Diplomatic Woman Huan Mee 83 downloads
- The Pauper of Park Lane William Le Queux 81 downloads
- The Revellers Louis Tracy 80 downloads
- The Lost Ambassador; Or, The Search For The Missing Delora E. Phillips Oppenheim 79 downloads