Frank Decker Books in Order

Frank Decker is Winslow’s modern manhunter, a former Marine who channels his stubborn sense of duty into finding people who have slipped out of sight. When the series opens he is a police detective in Lincoln, Nebraska, but his real talent lies in refusing to let go of a case once he has promised someone an answer.

In Missing: New York, Decker is first on scene when five‑year‑old Hailey Hansen vanishes from her front yard. As hours turn into days the official search winds down, and the department quietly shifts its attention to other crimes. Decker cannot, and his obsession with finding Hailey costs him his marriage and his badge. He walks away from the job and spends the next year crisscrossing the country, following the thinnest leads from the Midwest to Manhattan penthouses and Hamptons beach houses.

Missing: Germany begins after Decker has built a reputation as a private investigator who specializes in impossible disappearances. When a billionaire who once saved his life in Iraq asks for help locating his missing wife, Decker follows the trail from Florida to Europe. The search pushes him through upscale escort agencies, Ukrainian and Russian mob crews, and a human‑trafficking network that stretches across German cities.

These books are lean, focused thrillers built around one man’s refusal to accept that people can simply vanish. They combine road‑novel movement with methodical investigative work and keep the attention on the emotional stakes for families, not on clever puzzles. Readers who like missing‑person stories with moral weight and momentum will find a lot to hold onto here.