1) “Close Encounters of the Third Kind” (shown here) and “Star Wars” (both 1977), 8 and 10:30 p.m., Turner Classic Movies. It’s a splendid night for space. PBS’ “American Experience” concludes its rerun of the excellent, three-part “Chasing the Moon” (8-10 p.m.). And TCM has these masterpieces from Steven Spielberg and George Lucas, respectively. And yes, 1977 was a fun year to go to the movies.
2) Democratic debate, 8-11 p.m. ET, CNN; concludes Wednesday. This first debates drew a crowd — 15.3 million viewers the first night, 18.1 million the second. (The Democrats’ previous record was 15.8 million; Republicans drew 24 million four years ago.) Tonight’s round has the race’s leading liberals, Bernie Sanders and Elizabeth Warren, plus Pete Buttigieg, Amy Klobuchar and Beto O’Rourke. Also, Tim Ryan, John Delaney, Steve Bullock, John Hickenlooper and Marianne Williamson.
3) “The Bachelorette finale, 8-10:01 p.m., ABC. This has taken longer than expected, including the show’s first two-night finale. On Monday, Hannah Brown, 24, a former Miss Alabama, stilI had three guys to choose from — Peter Weber, 27, a pilot from California; Tyler Cameron, 26, a contractor from Florida; and Jed Wyatt, 25, a singer-songwriter from Tennessee. Now we see her choice.
4) “Blood & Treasure,” 10 p.m., CBS. Danny is busy trying to outmaneuver The Brotherhood, with help from Hardwick and Lexi. Then revelations shatter what he thought he knew about his past.
5) “Holey Moley,” 10:01 p.m., ABC. For a while, ABC promised to have comedy reruns tonight, after “Bachelorette.” Then it reversed itself and scheduled miniature golf; we’ll try again next Tuesday.