1) “Criminal Minds” series finale (shown here), 9 and 10 p.m, CBS. For 15 seasons, the team has chased grisly killers. That apparently puts “Minds” No. 5 among all-time dramas, trailing only “Gunsmoke,” “Lassie” and two editions of “Law & Order.” This final mission involves Everett Lynch, known as “The Chameleon,” who preys on middle-aged women. He’s eluded the team three times, once almost killing Rossi. Now Lynch gives Dr. Reid hallucinations of ghosts from his past. Every finale needs that.
2) “Good Trouble,” 10 p.m., Freeform. The modern workplace seems filled with traps … at least for beautiful (and/or handsome) young people. Callie fumes when her lover is on the opposite side of a case … Mariana and her boss try to sort out their feelings … and Raj – well, he sort of ends up wearing elf ears and doing magic tricks. It’s a strong episode, especially when mixed with Davia’s doubts as a new teacher, pondering students who don’t seem to trust her and a principal who doesn’t seem to care.
3) Democratic debate, 9 p.m. ET, NBC and MSNBC. Las Vegas is already the site of award shows, beauty pageants, boxing matches and magic acts; now it gets a presidential debate. Bernie Sanders, Pete Buttigieg, Elizabeth Warren, Joe Biden and Amy Klobuchar will be there, possibly with Mike Bloomberg. It’s the ninth of 12 scheduled debates, this time with reporters from both networks.
4) “Dr. Strangelove” (1964) and “The Pink Panther” (1963), 8 and 9:45 p.m. ET, Turner Classic Movies. This Peter Sellers double-feature is packed with big laughs. “Strangelove” – with its dark, end-of-the-world satire – is a film-buff favorite; the American Film Institute puts it No. 3 on its comedy list, trailing only “Some Like It Hot” and “Tootsie.” But afterward, savor “Pink Panther,” from its cartoon credits and bouncy music to Sellers as someone wondrously unaware of his own incompetence.
5) And more: “Party of Five” (9 p.m., Freeform) has another so-so episode, full of self-inflicted emotional wounds. More promising: “Bluebird” (8 and 10 p.m., CMT), a documentary about the famed Nashville spot … “Modern Family” (9 p.m., ABC), with everyone converging on the restaurant where Lily has her first date … And the annual special with stand-up acts from Montreal’s comedy festival. Howie Mandel introduces Rachel Bloom, Alonzo Bodden, Ronnie Chieung, Anjelah Johnson and more.