Guest Stars Jean Marsh as Sara Kingdom Bryan Mosley as Prop Man Norman Mitchell as First Policeman Malcolm Rogers as Second Policeman Royston Tickner as Steinberger P. Green Clifford Earl as Station Sergeant Reg Pritchard as Man in Mackintosh David James as Arab Sheikh Sheila Dunn as Blossom Lefavre Robert Jewell as Clown Kenneth Thornett as Detective-Inspector Leonard Grahame as Darcy Tranton Conrad Monk as Assistant Director Paula Topham as Vamp Albert Barrington as Professor Webster Stephen Machin as Cameraman