Gerald Mohr
— Michael Lanyard / The Lone Wolf
Janis Carter
— Carla Winter
Eric Blore
— Jameson
John Abbott
— Lal Bara
William B. Davidson
— Inspector Crane (as William Davidson)
Don Beddoe
— Stonley
Adele Roberts
— Rita Hale
Mark Roberts
— Dick Hale (as Robert Scott)
Peter Whitney
— Harvey Beaumont
Ian Wolfe
— Adam Wheelright
Edith Evanson
— Olga - Carla's Maid
Eddie Acuff
— Detective Jones (uncredited)
Edward Biby
— Club Marquis Patron (uncredited)
David Bond
— Room Service Waiter (uncredited)
Symona Boniface
— Grand Dame at Airport (uncredited)
Maurice Cass
— Asst. Hotel Mgr. (uncredited)
Eddy Chandler
— House Detective (uncredited)
Bess Flowers
— Nightclub patron
George Ford
— Club Marquis Patron (uncredited)
Stuart Hall
— Bystander at Airport (uncredited)
Lew Harvey
— Brooklynese Bystander at Airport (uncredited)
Virginia Hunter
— Lili - Nightclub Dancer (uncredited)
Olaf Hytten
— Prince of Rapur (uncredited)
Cy Malis
— Fireman (uncredited)
Joe Palma
— Club Marquis Waiter (uncredited)
Bob Perry
— Bystander at Airport (uncredited)
Robert Ryan
— Plainclothesman (uncredited)
Jeffrey Sayre
— Wheelright's Assistant Jeweler (uncredited)
Billy Snyder
— Hotel Night Clerk (uncredited)
John Tyrrell
— Pierre - the Chauffeur (uncredited)