Including John Meillon (Maurice 'Pop' Pym), Rod Taylor (Palmer), Yelena Zigon (Madame Cavalli), Judy Morris (Miss Lockhart), John Ewart (Freddie Graves), Harold Hopkins (Larry Pym), Patrick Cargill (Fitzwilliam), Garry McDonald (Lou), Sally Conabere (Lucy Lockheart), Donald Crosby (Major Lockhart), Dolore Whiteman (Mrs Summers), and Jeanie Drynan (Mrs Duncan).