Gone missing / Linda Castillo.

Enhanced descriptions from Syndetics:

Linda Castillo's bestselling series has been called "gripping" [ People ] and "impossible to put down" [ Bookpage ] and the "teeth chattering suspense" [ USA Today ] continues with GONE MISSING--a deeply chilling novel about a rite of passage gone horribly wrong.

Rumspringa is the time when Amish teens are allowed to experience life without the rules. It's an exciting time of personal discovery and growth before committing to the church. But when a young teen disappears without a trace, the carefree fun comes to an abrupt and sinister end, and fear spreads through the community like a contagion.

A missing child is a nightmare to all parents, and never more so than in the Amish community, where family ties run deep. When the search for the presumed runaway turns up a dead body, the case quickly becomes a murder investigation. And chief of Police Kate Burkholder knows that in order to solve this case she will have to call upon everything she has to give not only as a cop, but as a woman whose own Amish roots run deep.

Kate and state agent, John Tomasetti, delve into the lives of the missing teen and discover links to cold cases that may go back years. But will Kate piece together all the parts of this sinister puzzle in time to save the missing teen and the Amish community from a devastating fate? Or will she find herself locked in a fight to the death with a merciless killer?