Bette Davis as Margaret DeLorca / Edith Phillips

Karl Malden as Sergeant Jim Hobbson

Peter Lawford as Tony Collins

Philip Carey as Sergeant Hoag

Jean Hagen as Dede Marshall

George Macready as Paul Harrison

Estelle Winwood as Dona Anna

George Chandler as George, Chauffeur

Mario Alcalde as Garcia

Cyril Delevanti as Henry, the Butler

Monika Henreid as Janet

Bert Remsen as Daniel 'Dan' Lister, Bartender

Charles Watts as Apartment Manager

Ken Lynch as Captain Johnson

Jon Lormer as Alonzo (uncredited)

Perry Blackwell as Organist at Edie's Bar (uncredited)

Charles Meredith as Defense Attorney (uncredited)

Bryan O'Byrne as Beemis (uncredited)

Leoda Richards as Party Guest (uncredited)

Connie Cezon as Margaret DeLorca (uncredited)

Charles Fredericks as Tom Marshall (uncredited)

Herschel Graham as Funeral Attendee (uncredited)