Warren William
— Michael Lanyard / The Lone Wolf
Ann Savage
— Valerie King
Eric Blore
— Llewellyn Jameson
Robert Stanford
— Donald Jameson
Sheldon Leonard
— Johnny Booth
Lloyd Bridges
— Fritz
Gavin Muir
— Karl
Grace Lem
— Chinese Lady at Nightclub
Sig Arno
— Mr. Whistler
Frank Arnold
— French Waiter
Frances Chan
— Chinese Lady at Nightclub
Darby Jones
— Bellboy
Frank Lackteen
— Laundry Proprietor
Mal Merrihugh
— Chauffeur
Louis Merrill
— Mr. Rembrandt
Jay Novello
— Mr. Cezanne
Frank O'Connor
— Wembley Agent
Jack Rice
— Hotel Night Clerk
Floyd Shackelford
— Bellboy
Gene Stone
— Bartender
Nick Thompson
— Henchman in Laundry
John Tyrrell
— Wembley Agent
Frederick Worlock
— Sir Roger Wembley