Peter Murray-Hill

Character: Capt. Johnnie Gray

Sally Gray

Character: Claire Kent

Gibb McLaughlin

Character: Mr. J.G. Reeder

Malcolm Keen

Character: Peter Kent

Leslie Perrins

Character: Jeffrey Legge (Maj. Jeffrey Floyd)

Sarah Seegar

Character: Lila Legge

D.J. Williams

Character: Emmanuel Legge

Rex Carvel

Character: Sir John Flaherty

Robert Cochran

Character: Det. Insp. Barker

Philip Ray

Character: Fenner

Bobbie Comber

Character: Gray's butler

Florence Groves

Character: Daisy, club desk-clerk

George Merritt

Character: Bert Stevens, club porter