Vincent Price

Dr. Richard Cross

Lynn Bari

Nurse Elaine Jordan

Frank Latimore

Lt. Paul Stewart

Anabel Shaw

Mrs. Janet Stewart

Stephen Dunne

Dr. Stevens (as Michael Dunne)

Reed Hadley

District Attorney O'Neill

Renee Carson

Miss Hatfield - Head Nurse

Charles Trowbridge

Dr. Franklin Harvey

Robert Adler

Frank - Male Nurse