"Landmark" concludes the entire series with Inspector Luger back from his honeymoon, lamenting that he doesn't want to be married! (third and final appearance for Carina Afable's Perlita Avilar). Harris looks into a series of manhole cover thefts orchestrated by Melvin Jackson (Mesach Taylor), who has been selling them to junk dealers at $12 apiece! (Dietrich: "alright, I'll put a lid on it!"). Jackson objects to Harris, the astute writer, constantly asking him if it has something to do with his sex life ("what can you get for $12?"). Carl Ebling (Oliver Clark, last of six) works for a pharmaceutical company that refuses to contemplate marketing his cultures that may be able to cure myoclonus, which 50,000 people suffer from. His superior (Earl Boen) figures it's better to work out the details rather than allow an imprisoned Ebling to imply that their company doesn't care about its customers. Before the 12th Precinct closes up at 6:00 PM, nine guests show up to bid goodbye with a trophy for Captain Miller- Arthur Duncan, out on bail mugger of the handicapped, making his fourth appearance (J. J. Barry, last of seven); store owner Bruno Bender, making his seventh appearance (Stanley Brock, last of nine); Bruno's wife Naomi, making her second appearance (Mari Gorman, last of six); homeless Sam Belinkoff, making his second appearance (Walter Janowitz, last of five); former derelict Ray Brewer, making his sixth appearance (John Dullaghan, last of ten); blind Leon Roth, making his fourth appearance (Ralph Manza, last of seven); Roth's roommate Phillip Lukeather, making his third appearance (Judson Morgan, last of four); and, going back to only the second episode, Marty Morrison (Jack De Leon), in his eighth appearance, plus his companion Darryl Driscoll, making his fifth (Ray Stewart). Barney announces the new locations for his detectives: Dietrich is going to Washington Heights in upper Manhattan, Harris to Flushing Meadows in Queens (Harris: "I quit!"), Wojo to Roosevelt Island on the East River (between Manhattan and Queens), as part of their Canine Corps. (Wojo: "I'll probably get stuck with some old bitch!"). Most surprising is the fate of Officer Carl E. Levitt, graduating to Detective Sergeant Levitt, to report for duty at the 73rd Precinct. George Murdock (last of twelve) makes his eleventh appearance as Lt. Ben Scanlon from Internal Affairs, hardly a welcome presence at the 12th, revealing the news to Captain Miller that he has been promoted to Deputy Inspector, assuming that Barney already knew ("and I had to be the one to tell him?"). Barney stays behind after Harris, Dietrich, and Wojo leave (Wojo gets a hug), reminiscing about absent friends: Gregory Sierra's Chano, who left after the second season (in footage from the pilot episode, opposite Chu Chu Malave); Abe Vigoda's Fish, who left after the third; Linda Lavin's Janice Wentworth, who made quite an impression in only five episodes (footage from "Grand Hotel," opposite Arnold Soboloff); and the late Jack Soo's much missed Nick Yemana, purveyor of bad coffee. Hal Linden switches off the light, and the long running series is suddenly over, with a final notice on the screen: "Goodbye and Thank You From All of Us at the Ol' One Two."
