The Third Alibi

A composer (Laurence Payne) is stuck in a middle-class marriage and finds that his affair with his wife's half-sister (Jane Griffiths) has resulted in a pregnancy. When his wife refuses to give him a divorce he hatches a murder scheme that is too clever by half.

Thriller Drama

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)

Olive Milbourne

(Mrs. Booth)

Arthur Hewlett

(Marshall)

Annette Kerr

(Cinema cashier)

Cleo Laine

(Cleo)

Dudley Moore

(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))

Aileen Lewis

(Sheila (Party Guest) (uncredited))

Richard Neller

(Sleeping Man in Theater (uncredited))

Pat Ryan

(Detective Examining Tape-Recorder (uncredited))

Stuart Saunders

(Cinema manager (uncredited))

Arthur Skinner

(Det. Sgt. Carter (uncredited))

John Tatham

(Detective / Fingerprints Officer (uncredited))