James Rennie
— Detective Malcom 'Duke' Ayres
Olive Borden
— Marie Douglas
Judith Wood
— Helen Travers / Paula Murdock
Wilfred Jessop
— Valet
Harry Tyler
— John Hamilton
Adrian Rosley
— Tony, Window Washer
Charles Eaton
— Carl Travers
Joseph Calleia
— Stephen Arnaud
Walter Fenner
— Miguel Cordoba
Harry Short
— Sulk