Dennis T. Cosgrove
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Dennis T. Cosgrove

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Dennis T. Cosgrove spent decades pursuing criminals and advising governments on complex security issues during and after his FBI career. His work took him across the U.S., Europe, Central Asia, and the Balkans, offering rare insight into international crime and political tensions. His debut novel, The Diamond Game, is drawn from his real life experiences and FBI cases. His second book, Nadezhda Dies Last, builds on those experiences, weaving a gripping story of suspense and betrayal set in Moscow and Athens. Dennis lives in Florida with his wife. When not writing, he enjoys rugby (now touch), yoga, and open-water swimming - always chasing new challenges. A third novel in the series is currently in development. Rare photos, behind-the-scenes glimpses, and real-life adventures that inspired my FBI thrillers - explore more on Instagram @Insidedirectiveseven and get an exclusive first look at what's coming next.
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