Demons of the Mind

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

The films working title was Blood Will Have Blood. Principal photography took place fromAugust to September 1971.Peter Sykes was hired after Hammer were impressed by his work on Venom. The movie was based on the life of Franz Mesmer. ........

Source: Wikipedia