An insurance investigator tumbles onto a series of similar deaths, by brain hemorrhage, of patients of a psychiatric clinic in France where therapy involves a device which can implant visual imagery in the minds of patients, ostensibly to help them relax.

• Merton Park Studios
• Rod Cameron
• Mary Murphy
• Meredith Edwards
• Peter Illing
• Carl Jaffe
• Kay Callard
• Carl Duering
• Roberta Huby