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  1. ***Ruthless Cross (Off the Grid: FBI Series Book 6) by Barbara Freethy. Price: Free. Genre: Espionage Thriller, New York Times Bestselling Author. Rated: 4.6 stars on 642 Reviews. 344 pages. ASIN: B07XWSH77C.

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  1. *The New Prometheus: A Sci-Fi Action Thriller by Andrew M. Dobell. Price: Free. Genre: Espionage Thrillers. Rated: 4.3 stars on 184 Reviews. 241 pages. ASIN: B09MD8FYC3.

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  1. *The Amazing Interlude (Repeat) by Mary Roberts Rinehart. Price: Free. Genre: Espionage Thriller, Adventure, Suspense. Rated: 4.4 stars on 114 Reviews. 146 pages. ASIN: B07D7FBXTR.

Harry Bunn’s ‘Brotherhood of the Skull: A Purple Frog Thriller’, Great Free Kindle Spy Thriller Book, Deals

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  1. *Brotherhood of the Skull: A Purple Frog Thriller by Harry Bunn. Price: Free. Genre: Espionage Thriller, Political, Suspense. Rated: 5 stars on 5 Reviews. 239 pages. ASIN: B09JVM7F4W.

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  1. *Bangkok Whispers by Stephen Shaiken. Price: Free. Genre: Espionage Thriller, Adventure, Suspense. Rated: 4.2 stars on 149 Reviews. 248 pages. ASIN: B08GJCMSQ7.
  2. *The 24th Name by John Braddock. Price: Free. Genre: Espionage Thriller, Adventure, Suspense. Rated: 4.1 stars on 102 Reviews. 175 pages. ASIN: B07F3PN3LH.

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  1. The Mirrors by S M Barton. Price: Free. Genre: Espionage Thriller, Historical, Adventure, Suspense. Rated: 4 stars on 32 Reviews. 473 pages. ASIN: B08GBBGQJR.

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  1. **The Lion’s Prey: Cole Cameron Thriller Series Book 2 (Repeat) by Camden Mayes. Price: Free. Genre: Espionage Thriller, Suspense. Rated: 4.5 stars on 85 Reviews. 305 pages. ASIN: B07SBYXH9R.

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  1. *Nothing They Won’t Do by Benjamin Campbell. Price: Free. Genre: Espionage Thriller, Suspense. Rated: 5 stars on 11 Reviews. 330 pages. ASIN: B0B39GFKFM.

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  1. *The Orphan Factory (The Orphan Trilogy Book 2) by James Morcan. Price: Free. Genre: Espionage Thriller, Conspiracies, Cyberpunk. Rated: 4.3 stars on 91 Reviews. 584 pages. ASIN: B008M9WWKW.