Once Vanished (Riley Paige #23)

Each vanished cop is a clue, each cold case a piece of the puzzle, and for FBI Agent Riley Paige, deciphering the sinister pattern becomes personal when the trail hints at the return of a legendary serial predator.

Paige must confront the shadows of her harrowing past to outwit this imitator—or mastermind—before the grip of history tightens around new victims.