Sergeant Jackie O'Hara arrives on the remote Isle of Toll Mòr to follow up an emergency call from local farmer Frank Guthrie. As the weather worsens and she makes her way inland, nothing can prepare her for what she's about to witness. The Harrowing is written by Mark Healy and stars Joanne Froggatt as Sergeant Jackie O'Hara. Episode 1 also features: The Stranger - Stewart Scudamore Father McKenna - Alec Newman Inspector Carey - Rosalind Eleazar Mr Pryor - Adam James Police Constable - Scarlett Maltman Maggie Webb - Hilary Maclean Paul Rutherford - Blair Kincaid Micky Brodsky - Tom Crowley Ewan MacFarlane - Jamie Michie Alan Forbes - Stuart Martin Other roles were played by the cast Sound design is by Rich Evans and photography by Helen Murray. The executive producers are Robert Delamere and Sarah Doole and the series is produced by Ben Walker for Storyglass.   See acast.com/privacy for privacy and opt-out information.