The final confrontation looms. The great evil that has engulfed the island threatens a brutal revenge and Jackie finally comes to understand the terrible truth of what is happening on Toll Mòr.

The Harrowing is written by Mark Healy and stars Joanne Froggatt as Sergeant Jackie O'Hara. Episode 8 also features:

Father McKenna - Alec Newman

Mr Pryor - Adam James

Inspector Carey - Rosalind Eleazar

Twig - Sorcha Groundsell

Raven - Jamie Michie

Raven - Tom Crowley

Raven / Police Constable - Scarlett Maltman

Raven - Blair Kincaid

Major Tanner - Regé-Jean Page

Kai - Stewart Scudamore

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.

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