🔍 1. The Gray Man by Mark Greaney
Think: G. Callen meets Jason Bourne
A former CIA operative-turned-legendary assassin is hunted across the globe. High-tech gadgets, nonstop action, and a relentless pace make this series addictive.
🧨 2. Without Remorse by Tom Clancy
Think: Sam Hanna’s loyalty + action
A raw origin story of John Clark—Navy SEAL turned black ops agent. Gritty, emotional, and full of tactical realism.
🎯 3. Terminal List by Jack Carr
Think: Deeks if he went dark
A former Navy SEAL seeks vengeance after betrayal by the government. Brutal, fast, and packed with emotion—plus written by a real Navy SEAL.
🕵️♀️ 4. I Am Pilgrim by Terry Hayes
Think: A Hetty-approved masterpiece
A retired intelligence agent is pulled back in to prevent global catastrophe. Deeply layered, intellectual, and utterly gripping.
💻 5. American Assassin by Vince Flynn
Think: NCIS meets CIA rookie
Follow Mitch Rapp’s journey from college grad to CIA’s deadliest covert weapon. Great if you loved watching Nell or Fatima evolve into top-tier agents.
🎧 6. The Cleaner by Mark Dawson (John Milton series)
Think: Callen going rogue
An assassin for a secret British agency tries to leave his violent past behind. A mix of redemption, tension, and slick operations.
🛰️ 7. The Lions of Lucerne by Brad Thor
Think: High-stakes ops with global threats
Scot Harvath is an ex-Navy SEAL turned Secret Service agent. Political thrillers, terrorist threats, and constant globe-trotting action.
🧬 8. The Athena Protocol by Shamim Sarif
Think: Kensi undercover, but younger
A rogue female operative defies orders to stop a human trafficker. Female-led, fast-paced, and emotionally charged.
📖 Bonus Pick for Hetty Fans:
• The Secret Pilgrim by John le Carré
Filled with spycraft, memory, and subtle tension—this is Hetty’s bookshelf energy written all over it.
