Guest Stars Andre Van Gyseghem as Sir Francis Pauline Moran as Mary Lawrence Gordon Jackson as Howard Lawrence Kathleen Byron as Elsbeth Vladek Sheybal as Herr Hubert Sydney Bromley as Otto Norma Shebbeare as Minna Ian Bamforth as Hans Joyce Graeme as White Princess Linda Roberts as Eva Alan Starkey as Black Murderer Arthur Sweet as Magician Frederick Radley as Old Man