set and were shot in San Diego. The supporting cast for the San Diego episodes includes: Henry Darrow as Lt. Manny Quinlan, Harry's sometimes antagonistic police contact Tom Atkins as Sgt. Frank Cole, Quinlan's none-too-bright assistant (five episodes) David Moses as Officer Billings, a patrolman often seen performing crime-scene duties (four episodes) G.W. Bailey as Officer Remsen, a patrolman also often seen at crime scenes (three episodes) Mel Stewart as Roy Bardello, Harry's sarcastic mechanic (seen in two episodes, referenced in others) Season 1: The Los Angeles episodes Beginning with episode 14, a change in format was made. Behind the scenes, new production staff members were brought in, and on-camera, the entire supporting cast was dropped. Filming moved from San Diego to Los Angeles. Episode 14 was a stand-alone story that sent Harry out to perform his investigations in a remote desert location. From episode 15, Harry relocated to Los Angeles, moving his residence to the same location seen in the second pilot movie. The supporting cast for the Los Angeles episodes (from episode 15) includes: Anthony Zerbe as Lt. K.C. Trench, Harry's new police contact Paul Tulley as Sgt. Roberts, Trench's quiet assistant Hal Williams as Clarence, Harry's new mechanic (three episodes) Kathrine Baumann as Betsy, one of a group of friendly stewardesses who live next door to Harry (three episodes) Farrah Fawcett-Majors as Sue Ingram, another stewardess-next-door seen after Betsy leaves to marry her boyfriend (three episodes) Sue's huge dog Grover appears in two episodes, as Harry is often forced to look after him while Sue is away. Betsy's massive boyfriend Walter is often mentioned, but never seen Seen in one episode each were two characters who would become recurring players in season two: Les Lannom as amateur criminologist Lester Hodges, and Margaret Avery as friendly informant Ruby Dome. Henry Darrow also returned for one episode ("Elegy for a Cop") as Manny Quinlan. Season 2 Season two remained in Los Angeles. Some changes were made to the supporting cast, and the theme was given a second radical rearrangement. The season-two supporting cast includes: Anthony Zerbe as Lt. K.C. Trench, Harry's police contact Paul Tulley as Sgt. Roberts, Trench's assistant Farrah Fawcett-Majors as Sue Ingham, Harry's neighbor (five episodes) Bill Henderson as Spencer Johnson, Harry's frustrated mechanic (four episodes) Richard Stahl as Dr. Carl Samuelson, a police pathologist (four episodes) Les Lannom as Lester Hodges, an amateur criminologist who