1) “The Simpsons: Treehouse of Horror,” 8 p.m., Fox. This annual delight again offers three stories — sometimes too messy, often very funny, always quite weird. Bart and his dog switch souls … Homer transforms into other husbands (including Jeff Probst) … And, in a clever finale (shown here), Homer is trapped in a world of drivers-ed films, causing crash after crash.
2) “Maigret,” 9 p.m., PBS. The opener ended with a jolt: Maigret was run down by a speeding car. Now the probe continues, in a story that spans years and passions. It’s a strong ending to the first of three two-parters. At 8 p.m., “Professor T” has smart, one-hour stories; at 10, the true-crime tale “The Gold” continues its intriguing, six-week tale.
3) “Tracker,” 9 p.m., CBS. After help a runaway, a woman is missing; now Colter tries to find both of them. That’s followed by reruns of the second and third episodes of “Eternally Yours,” a fairly good vampire comedy.
4) “Halloween” (1978) and “The Devil in Silver,” 8 and 10 p.m., AMC. Here are reminders that horror tales can be beautifully crafted. John Carpenter’s micro-budged classic is followed by the fierce finale for a six-parter in which a troubled guy was thrown into a mental institution inhabited by a dark spirit. Dan Stevens is superb in “Silver,” which reruns at 10:03.
5) More movies: “Ghostbusters” (1984), a perpetual gem, is 9 p.m. on ABC. “Beetlejuice Beetlejuice” (2024) runs all day on TBS; the last one starts at 7:30. And Turner Classic Movies has films with Eva Marie Saint (who died Oct. 6 at 102), including two all-time greats: “On the Waterfront” (1954) and “North by Northwest” (1959), at 8 and 10 p.m. ET.