Austin Trevor

Character: Pierre Santos

George Hayes

Character: Henry Otisse

Garry Marsh

Character: Geoffrey Luce

Brian Buchel

Character: Adam Steele

Robert Horton

Character: Sir George Frame

Frederick Burtwell

Character: Det. Inspector Grant

Kiyoshi Takase

Character: Manservant

Claude Horton

Character: Dyson

Dorothy Boyd

Character: Dorothy Ayres

Marjorie Chard

Character: Lady Groombridge

Vera Bogetti

Character: Agnes Judd

Dorothy Minto

Character: Lilian Hope

Kathleen Harrison

Character: Nurse

Aubrey Mallalieu

Character: Doctor