Recurring Guest Characters Joan Thurgood 1 guest appearances Jim Thurgood 1 guest appearances George Chalmers 1 guest appearances Miss Guthrie 1 guest appearances Commander Delabo 1 guest appearances John Irvine 1 guest appearances Det. Sgt. Grant 1 guest appearances Supt. Hartley 1 guest appearances Mrs. Chalmers 1 guest appearances Dr. Howard 1 guest appearances Asst. Commissioner Lucas 1 guest appearances Police Sergeant 1 guest appearances Dr. Kendal 1 guest appearances