Davis and Pia, partners who met on a film course, visit Davis's mother Janet in the Scottish countryside and meet Davis's friend Stuart, who runs the last remaining pub in Loch Henry. When Pia learns about Iain Adair, a local serial killer who tortured tourists, she convinces Davis that they should make a documentary about him. Pia, Davis and Stuart break into Adair's basement and gather footage. Pia discovers from Janet's old VHS tapes of Bergerac that Janet and Davis's late father participated in Adair's crimes. She flees the house and evades Janet's pursuit but fatally falls in a river. Janet hangs herself next to evidence of her crimes. A BAFTA-winning true crime documentary is made about Loch Henry, with Davis's involvement; it brings tourism back to Stuart's pub. Alone in a hotel room, Davis re-reads Janet's suicide note: "For your film. Mum." Directed by: Sam Miller. Story by: Charlie Brooker.