Beverly Garland (Jane Marvin)
George Macready (Dr. Mark Sinclair)
Richard Crane (Paul Webster)
Lon Chaney, Jr. (Mannon)
Frieda Inescort (Mrs. Henry Hawthorne)
Douglas Kennedy (Dr. Wayne McGregor)
Bruce Bennett (Dr. Erik Lorimer)
Bill Bradley (Patient)
Dudley Dickerson (Porter)
Hal K. Dawson (Conductor)
Vince Townsend, Jr. (Toby)
Ruby Goodwin (Lou Ann)
John Merrick (Nurse No. 1)