The Secret Soldier (John Wells)

John Wells has walked away from the CIA, but the world keeps pulling him back—and this time, it's the king of Saudi Arabia himself asking for help. A aging monarch, a royal family riddled with distrust, and a conspiracy that could destabilize an entire region: the stakes here are geopolitical but the tension is deeply personal. Berenson builds his premise around a question that haunts every page—who do you trust when betrayal could come from any direction, including your own government?

What Berenson does especially well in this fifth installment is layer his thriller mechanics with genuine procedural authenticity. His knowledge of intelligence tradecraft and Middle Eastern politics gives the novel a weight that keeps it grounded even as the pace accelerates. The prose is lean without being spare, and the structure—moving between Wells in the field and the machinations back in Washington—creates a sustained unease that's harder to shake than simple action ever could be. Readers who want their thrillers to feel genuinely plausible, rooted in the messiness of real-world power, will find this one particularly absorbing.