A stabbed man is found in the water below the ruins of the old papermill in Vargön. Anything that can identify the victim has been carefully removed from the body, except for one detail that makes Mona Schiller believe herself to know who the victim is.
If she is right, everyone in her vicinity is in danger, but if she tells the police she is forced to reveal her dark past. To protect her secret, Mona joins in for the hunt of the killer.
This is the third part in the series of crime novels from the small community of Vargön, a place that hides dark secrets.