Having persuaded Mrs Hodgson to let them back in the house, Guy and Maurice attempt a Disobsession of the spirit, despite the risk to Janet and the family. Can they finally rid the house of evil and come out unscathed themselves?

Following the poltergeist's attack, Janet is sent to a neighbour's for safety. Maurice finds a lead on the ghost's origin and tries to convince Guy to bring in the Society for Psychical Research. But the strange activities become more dangerous.

Gripping drama based on the most-documented account of poltergeist activity in British history. Timothy Spall, Matthew Macfadyen and Juliet Stevenson star.