Guest Stars Barbara Young as Rita Jon Pertwee as Luis Silverado Bernard Horsfall as Professor Donn John Bluthal as Tonu Gordon Warnecke as Doctor Harry Cindy O'Callaghan as Patsy Choy-Ling Man as Minnie Ozzie Yue as Connie Hu Pryce as Specialist Jenny Jay as Juney Paddie O'Neil as Marcella Susie Ann Watkins as Dawn Sheila Bernette as Mrs. Hall Emily Hartley as Emily
