Mildred NatwickNadia Demarest Royal DanoMarvin the Push Judith EvelynMrs. Collins George ReevesRoger Sherman Walter SlezakFrank Cadwallader E.G. MarshallGavin Stevens Leslie NielsenSerge Soudekine Richard CooganInvestigator Westcott Harold J. StoneEagle Moran Sidney BlackmerDr. Steven Archer Olive DeeringMuriel Torres Eva GaborMadeleine De Rochefort Gaby RodgersJoanie Lennox Robert H. HarrisDr. Tabor Martin E. BrooksHarry Raymond Ray WalstonTicket Seller (uncredited) Otto KrugerChester Crabtree Marjorie GatesonFlorence Hackett Luis van RootenMonsieur Vidocq Basil RathboneDr. Jekyll / Mr. Hyde Jack PalanceCount Alessandro di Cagliostro Thomas MitchellDr. Paul Morgan Henry JonesMan at Train Station Eddie AlbertDanny Maguire Louisa Horton HillAlice Martin Edmon RyanDistrict Attorney Russell CollinsEverett Kelsey Frank MarthLt. Captain Richter George MathewsPolice Detective Dana WynterPatricia Richter Isobel ElsomMrs. Cattermole Robert EmhardtMorgan Nelson Susan DouglasZita Bradford Felicia MontealegreElaine Bela LugosiGen. Fortunato Warren StevensBernard Frank Richard FraserClub President Otto PremingerCaptain von Weissenborn Virginia GilmoreCora Maybee 
