The Third Alibi

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Norman Martell

Patricia Dainton

Helen Martell

Jane Griffiths

Peggy Hill

Edward Underdown

Dr. Peter Murdoch

John Arnatt

Supt. Ross

Humphrey Lestocq

Simmons, the Producer

Lucy Griffiths

Miss Potter

Olive Milbourne

Mrs. Booth

Arthur Hewlett

Marshall

Annette Kerr

Cinema cashier

Cleo Laine

Cleo

Дадлі Мур

Rehearsal Pianist (Uncredited)

Sylvia Davis

Cinema sales girl (uncredited)

Max Faulkner

Det. Sgt. Fred Smith (uncredited)

Garard Green

Patrol car policeman (uncredited)

Arthur Howell

P.C. Williams (uncredited)