Unholy Ground is the gripping new installment to the Serenity's Plain Secrets' mystery/crime thriller series. Sheriff Serenity Adams journeys to a northern Indiana Amish settlement to search for a missing girl, and discovers a young outsider has also vanished into thin air.

Serenity suspects the cases are connected, and joins forces with an unlikely ally to find answers. When she goes undercover, the sinister truth of the girls' whereabouts begins to unravel, and she finds herself in a race against time to save the girls, and a desperate fight for her own survival.