1) “Tracker” season-opener, 8 p.m., CBS. In its first season, this jumped to No. 1 in the Nielsen ratings. Now it makes new-season changes: Velma is helping Reeme start her law office; Colter (Justin Hartley, shown here) obsesses on a long-running case. That takes time, so the case-of-the-week – an interesting one – is solved quickly. It’s a fairly good start to a promising season.
2) “Moonflower Murders,” 9 p.m., PBS. This cleverly tangled tale shows us side-by-side mysteries – in a novel and in a real-life case it was adapted from. Tonight, the novel solves its main question – while leaving another. Next week’s finale – a good one – solves that and the real case.
3) “Haunted Mansion” (2023), 8-10:30 p.m., ABC. After opening last week with “Little Mermaid,” Disney goes into Halloween mode. After this mild (and so-so) film, it will have “Hocus Pocus” and its sequel, on Oct. 20 and 27. At 10:30 today, a new “Celebrity Family Feud” pits “Mansion” director Justin Simien and one of his stars, Tiffany Haddish.
4) “The Walking Dead: Daryl Dixon,” 9 p.m., AMC, rerunning at 10:15. After a long and emotional flashback, we’re back to the two crises: Carol is trying to find Daryl, who’s trying to rescue the boy being billed as a messiah.
There are fierce moments – it’s not as easy to face a mob when these aren’t zombies – and then a wrenching cliffhanger.
5) ALSO: Baseball’s National League championship series starts (check Sports) and “Big Brother” ends; the latter is 9-11 p.m. on CBS. On PBS, two-part mysteries begin. “Ridley” (8 p.m.) is out of its element, visiting a rave culture; “Van der Valk” probes some complex science schemes.