Dr. Francis Clay
Anne Palmieri
Mara
Cheryl Hume
Professor Osterman
Ruth
The Gardener (as John Ely)
Nurse Helen
Chaffeur
Policeman
Policeman
Inspector
Policeman
Nurse
Male Nurse
Cheryl's Husband
Patient
Ruth's Husband
Male Nurse
Policeman
Patient
Nurse Killed with Scythe (uncredited)