A once-in-a-century storm hits the remote Scottish Island of Toll Mòr. As the isolated community take shelter, a barbaric crime sets off a chain of events which threatens to change the course of history and a girl is found wandering the hills, lost and bewildered.This trailer features Sorcha Groundsell. The Harrowing is an 8-part supernatural thriller is created by acclaimed writer and director Mark Healy and produced by Storyglass. See acast.com/privacy for privacy and opt-out information.