Philip 'Phil' O'Dell
Heather McMara
Margaret 'Peggy' Maybrick
Christopher Hampden
Inspector Rigby
Det. Sgt. Reilly
Marilyn Durant
Martin Sorrowby
Boswell - Airport Manager
Sid - Bartender
Connors
Smithers
Danny McMara - Hit-and-Run Victim
Sales Manager
Donna Devore
Allan Mellon
Dr. Campbell - Asylum Superintendent
Miss Andrews - Asylum Receptionist
Mad Mary - Old Inmate at Murder Scene
Head Waiter
Delmont Switchboard Operator (as Jean Bayliss)
Steve
Desk Clerk at Heather's Apartment
John - Film Director
Minor Role (uncredited)
Airline Reservations Clerk (uncredited)
Nurse at Glenhaven Sanatorium (uncredited)
Minor Role (uncredited)
Minor Role (uncredited)
Minor Role (uncredited)
Police Sergeant (uncredited)
Girl at Film Studio (uncredited)
Minor Role (uncredited)
Hospital Attendant (uncredited)
Airline Reservations Clerk (uncredited)