A woman and a man vying for a woman's affection: the usual love trio? Not quite so since the belle in question is Lorraine de Grissac, a very wealthy and alluring society woman, while one of the two rivals is none other than Arsène Lupin, the notorious jewel thief everybody thought dead, now living under the assumed name of René Farrand. As for the other suitor he is an American, a former F.B.I. sleuth turned private eye by the name of Steve Emerson. Steve not only suspects Farrand of being Lupin but when someone attempts to steal a precious emerald necklace from Lorraine's uncle, Count de Brissac, he is persuaded Lupin is the culprit. Is Emerson right or wrong? Which of the two men will win over Lorraine's heart?
Melvyn Douglas
Virginia Bruce
Warren William
John Halliday
Nat Pendleton
Monty Woolley
E. E. Clive
George Zucco
Rollo Lloyd
Vladimir Sokoloff
Ian Wolfe
Tully Marshall
Jonathan Hale
George Davis
King Baggot
William Bailey
Edward Biby
Sidney Bracey
Egon Brecher
Harvey Clark
Chester Clute
Sidney D'Albrook
Frank Dawson
Helen Dickson
George Douglas
Jay Eaton
Stanley Fields
Christian J. Frank
Otto Fries
John Harmon
Ruth Hart
Dell Henderson
Perry Ivins
Robert Emmett Keane
Joe King
Priscilla Lawson
Frank Leigh
Mitchell Lewis
Tony Merlo
Robert Middlemass
Edmund Mortimer
Jack Norton
Bob O'Connor
Leonard Penn
Jean Perry
Lillian Rich
William Royle
Larry Steers
Harry Tyler
Jacques Vanaire
Pierre Watkin
Frank Whitbeck