Demons of the Mind is a 1972 British horror film, directed by Peter Sykes and produced Anglo-EMI, Frank Godwin Productions and Hammer Film Productions. It was written by Christopher Wicking, based on a story by Frank Godwin. It was released on 5 November 1972. The cast includes Gillian Hills (playing a role originally intended for Marianne Faithfull), Robert Hardy, Patrick Magee, Michael Hordern and Shane Briant.