Frankie Elkin, who readers first met in Before She Disappeared, learns of a young man who has gone missing in a national forest. Law enforcement has abandoned the search but a crew of people led by the young man's father are still looking. Sensing a father’s desperation, Frankie agrees to help—but soon sees that a missing person isn’t all that’s wrong here. And when more people start to vanish, Frankie realizes she’s up against something...

In the wake of a wife and mother's disappearance from her suburban home, an ensuing police investigation focuses on the missing woman's husband, whose suspicious behavior reveals cracks in their seemingly idyllic family life.

When his partner and lover, Rainie Conner, vanishes during her investigation into the case of a missing foster child, private detective Pierce Quincy enlists the aid of his daughter Kimberly, a rookie FBI agent, to uncover the truth.

Frankie Elkin is an average middle-aged woman, a recovering alcoholic with more regrets than belongings. But she spends her life doing what no one else will--searching for missing people the world has stopped looking for. When the police have given up, when the public no longer remembers, when the media has never paid attention, Frankie starts looking. A new case brings her to Mattapan, a Boston neighborhood with a rough reputation. She is searching...