Black Coffee

Austin Trevor

Hercule Poirot

Adrianne Allen

Lucia Amory

Richard Cooper

Capt. Hastings

Elizabeth Allan

Barbara Amory

C. V. France

Sir Claude Amory

Philip Strange

Richard Amory

Dino Galvani

Dr. Carelli

Michael Shepley

Raynor

Melville Cooper

Insp. Japp

Marie Wright

Miss Amory

Leila Page

(uncredited)