Elsa Lanchester
Mrs. Oates

Sara Allgood
Nurse Barker

Rhys Williams
Mr. Oates

James Bell
Constable

Erville Alderson
Dr. Harvey (uncredited)

Ellen Corby
Neighbour (uncredited)

Myrna Dell
Murder Victim (uncredited)

George Holmes
The Killer's 'Shadow' (uncredited)

Stanley Price
Starry-eyed Man (uncredited)

Robert Siodmak
The Killer's 'Eye' (uncredited)