Guest Stars Keith Pyott as Asst. Commissioner Lucas John Garvin as Jim Thurgood Rosemary Miller as Joan Thurgood Jerome Willis as John Irvine William Dexter as Supt. Hartley Michael Hawkins voices George Chalmers Barrie Cookson as Dr. Howard John Moore as Dr. Kendal Ronald Wilson as Det. Sgt. Grant Vanessa Thornton as Miss Guthrie Bruce Beeby as Commander Delabo Yvette Rees as Mrs. Chalmers Charles Bird as Police Sergeant
