Thrown objects, apparent levitation, and a dead man who seems to speak through a 12-year-old girl. It can only be The Enfield Poltergeist. It's a story that made national headlines in 1977, and has caused controversy ever since. Was the phenomena genuinely paranomal, or did a 12-year-old girl somehow pull off a hoax that fooled dozens of eyewitnesses - from journalists to the police.

Danny Robins and the team look at the evidence, and talk to Graham Morris, whose iconic photographs documented activity inside the house, in a special episode recorded live at the Crossed Wires Festival in Sheffield.

Presented by Danny Robins

Experts: Evelyn Hollow and Dr Ciaran O'KeeffeStory sections by Victoria Lloyd & Sarah MorganResearch by Nancy BottomleyFilming and editing by SpiritlandEditing and sound design by Charlie Brandon-KingTheme music by Katherine PriddyTheme co-produced by Jennifer Ann KellerIncidental music by Evelyn SykesCommissioning executive: Paula McDonnellCommissioning editor: Rhian RobertsProduced by Simon Barnard and Victoria LloydA Bafflegab and Uncanny Media production for BBC Radio 4 and BBC Sounds