Stewart Rome
— Francis Xavier Benedik / Boswell Marsh
John Longden
— Anthony Xavier 'Tony' Benedik
Dorothy Boyd
— Petronella 'Peter' Rickforth
Charles Paton
— Samuel Faraday Rickforth
Leslie Mitchell
— Basil Woolrich
Sybil Grove
— Elsa Victoria Fairburn, Benedik's housekeeper
Cecil Clayton
— Mr Musgrove, theatre ticket agent
Fletcher Lightfoot
— William Prout, Benedik's butler
Edmund Willard
— Captain Inigo 'Glassy' James
Eileen Lamb
— Christabel Pagan, Benedik's private secretary
Fred Schwarz
— MacDonald, creditor