James Hill Director Mark Lester Joe Evans Actor Walter Slezak Hackenschmidt Actor Peter Lee Lawrence Gervaise Actor Uschi Glas Marie Hackenschmidt Actor Patrick Mower Sam Greener Actor John Nettleton Sir William Actor Maria Rohm Lady Anne Actor Eddie Golden Evans Actor Clive Geraghty Roger Actor John Hoey Muldoon Actor Margaret Lacey Anna Sewell Actor Peter L. Andrews Producer Malcolm Heyworth Producer Artur Brauner Producer Wolf Mankowitz Screenwriter Fernando Arribas Cinematographer Chris Menges Cinematographer Ann Chegwidden Film Editing Pablo González del Amo Film Editing Adolfo Cofiño Production Design Hazel Peiser Art Director Maruja Galindo Costume Design Claudia Hahne-Herberg Costume Design