Lucy Catherine's supernatural thriller returns to the new town of Harland. 16 months have passed and no trace has been found of Detective Inspector Sarah Ward. She was last seen disappearing into the brooding sinkhole that swallowed a housing estate. Tyger Drew Honey stars as Dan, the lowly CCTV operative determined to solve the mystery.

Sound Design by Caleb Knightley

A BBC Audio production for BBC Radio 4