One Step Too Far by Lisa Gardner

The novel follows Frankie Elkin, a determined and resourceful woman who specializes in finding missing persons that others have given up on. She joins a search party in the rugged wilderness of Wyoming to locate a man who vanished during a bachelor party camping trip. As the group ventures deeper into the treacherous terrain, tensions rise and secrets emerge, revealing the complex dynamics and hidden motives among the searchers. Frankie must rely on her instincts and resilience to navigate the dangers of both the natural world and human nature, ultimately uncovering the truth behind the disappearance.