Five men head into the woods for a bachelor party weekend. Only four return. The brand new thriller by New York Times no 1 bestselling author, Lisa Gardner. Hours stretch into days which stretch into weeks. Volunteers go home, police are assigned new missions and the missing hiker Timothy O'Day becomes one more missing person, vanished without a trace. Until Frankie Elkin - missing persons specialist - comes to town. Fresh off her case in Boston, Frankie heads to Wyoming, determined to find Timothy and bring him home - whatever the cost. Frankie joins a seven-day woodland search team, lead by Tim's father Martin, as they venture deep into the dark forest to uncover the truth. Broken tree limbs and traces of blood suggest a wild animal may be lurking nearby. Frankie knows better. But with secrets swirling and tensions raised in the group, it becomes clear that Frankie Elkin's newest case could be her last...