Demons of the Mind (1972)🔹

Demons of the Mind is a 1967 British 'Hammer Film Productions' horror thriller film. It features Robert Hardy, Shane Briant, Gillian Hills, Yvonne Mitchell, Paul Jones, Patrick Magee, Michael Hordern, and Thomas Heathcote. A physician discovers that two children are being kept virtually imprisoned in their house by their father. He investigates, and discovers a web of sex, incest, and Satanic possession.