It's Mayday in a small town steeped in pagan traditions where the crowning of the May Queen is the highlight of the day until suddenly she goes missing.

Sophie Okonedo, Aidan Gillen, Koko Anglo, Matthew Ashforde, Lesley Manville, Sam Spruell, Caroline Berry, Richard Hawley, Peter Firth, Daniel Coonan, Daniel Coonan, Max Fowler, Hannah Jean-Baptiste, Leila Mimmack, Charley Palmer Rothwell, Peter McDonald