Alibi

Austin Trevor

As Hercule Poirot

Franklin Dyall

As Sir Roger Ackroyd

Elizabeth Allan

As Ursula Browne

J.H. Roberts

As Dr. Sheppard

John Deverell

As Lord Halliford

Ronald Ward

As Ralph Ackroyd

Mary Jerrold

As Mrs. Ackroyd

Mercia Swinburne

As Caryll Sheppard

Harvey Braban

As Insp. Davis

Clare Greet

As (uncredited)