The Third Alibi

Laurence Payne

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

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Olive Milbourne

Mrs. Booth

Arthur Hewlett

Marshall

Annette Kerr

Cinema cashier

Cleo Laine

Cleo

Dudley Moore

Rehearsal Pianist (Uncredited)

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Sylvia Davis

Cinema sales girl (uncredited)

Max Faulkner

Det. Sgt. Fred Smith (uncredited)

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Garard Green

Patrol car policeman (uncredited)

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Arthur Howell

P.C. Williams (uncredited)

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Richard Neller

Sleeping Man in Theater (uncredited)

Pat Ryan

Detective Examining Tape-Recorder (uncredited)

Stuart Saunders

Cinema manager (uncredited)

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Arthur Skinner

Det. Sgt. Carter (uncredited)

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John Tatham

Detective / Fingerprints Officer (uncredited)