John Loder as John Ryder

Lilian Oldland as Mollie Ryder

Donald Wolfit as Henry Camberley

Austin Trevor as Inspector Parker

Peter Haddon as Lord Peter Wimsey

Leslie Perrins as Maurice Windermere

Aubrey Mather as Bunter

Robb Wilton as Porter

Ralph Truman as Saunders

Ann Codrington as Desk Clerk

George De Warfaz as Chief of Foreign Police

Annie Esmond as Old Lady Passenger

Dorice Fordred as Camberly's Accomplice

Vincent Holman as Works Manager

Gordon McLeod as Commissioner

Frederick Burtwell as

Percy Rhodes as

Howard Douglas as Ticket Inspector (uncredited)

Charles Paton as Man Holding Dogs (uncredited)