The Yacht Girl. Ryan Lock, #13

Billionaires don't play by the rules. But neither does Ryan Lock. When military veterans Ryan Lock and Ty Johnson are hired to provide a security audit of a billionaire's private island, they uncover a sinister secret beneath the luxury-one that powerful people will kill to keep buried. What starts as an easy payday quickly turns dark. The island caters to the ultra-rich with sun, sea, and every indulgence money can buy-but something about it feels wrong.
Deeply wrong. Marketed as a no-questions-asked sanctuary for the world's wealthiest and most powerful, the island promises total privacy: no cameras in the villas, no paper trail, no accountability. But Lock and Ty didn't build their reputations by looking the other way. As they peel back the layers, the cracks begin to show-discreet surveillance networks, contradictory stories, and a missing 'yacht girl' no one wants to talk about.
The deeper they dig, the more it becomes clear: this isn't just a job. It's a trap. Perfect for fans of Harlan Coben, Gregg Hurwitz, and James Patterson, The Yacht Girl is the next heart-pounding entry in the Ryan Lock series from International Thriller Writers Award winner Sean Black.