Possum is a 2017 British horror film written and directed by Matthew Holness. The film stars Sean Harris (Deliver Us from Evil; Prometheus; Isolation) and Alun Armstrong (Penny Dreadful; Van Helsing; The Mummy Returns; The Sex Victims).
Together with Possum, a hideous hand-puppet, disgraced puppeteer Philip (Sean Harris) returns to his childhood home.
Staying with his cruel stepfather, Maurice (Alun Armstrong), Philip soon discovers that ridding himself of Possum is no easy task. When his attempts to destroy the demonic puppet fail, Philip suspects Maurice of manipulating Possum to cause him further distress.
As their relationship deteriorates, repressed memories of a traumatic childhood start to resurface. When a local child goes missing and the police suspect him of the crimes, Philip is forced to confront the nightmares of his past and discovers that the real demon lurks much closer to home…