Hugh Williams

Nick Barclay

Jane Baxter

Lady June Slade

Ronald Ward

Jimmy Slade

Maurice Schwartz

The Master

George Merritt

Det. Insp. Mallory

Henry Oscar

Interpol Detective

Donald Calthrop

Dr. Harold E. Walpole

Kitty Kelly

Marian Weeks

Wilfrid Caithness

Raines - the butler

Peter Gawthorne

Lord Slade