Robert Alda as Bruce Conrad [Conrad Ryler in on-screen end credits]

Andrea King as Julie Holden

Peter Lorre as Hilary Cummins

Victor Francen as Francis Ingram

J. Carrol Naish as Police Commissario Ovidio Castanio

Charles Dingle as Raymond Arlington

John Alvin as Donald Arlington

David Hoffman as Ingram's Attorney Duprex

Barbara Brown as Mrs. Miller

Patricia Barry as Clara the Maid

William Edmunds as Ingram's Servant Antonio

Belle Mitchell as Giovanna the Cook

Ray Walker as Edward Miller

Pedro de Cordoba as Sidewalk Cafe Waiter Horatio