With the stranger and the girl missing, Jackie has to tell the islanders what has happened and enlist their help conducting a search.

The Harrowing is written by Mark Healy and stars Joanne Froggatt as Sergeant Jackie O'Hara. Episode 4 also features:

Reporter 1 - Tom Crowley

Reporter 2 - Blair Kincaid

Father McKenna - Alec Newman

Reporter 3 - Hilary Maclean

Ian Sullivan - Lewis Howden

Inspector Carey - Rosalind Eleazar

Alan Forbes - Stuart Martin

Mr Pryor - Adam James

Kai - Stewart Scudamore

Twig - Sorcha Groundsell

Ewan MacFarlane - Jamie Michie

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.

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