1) “Chicago P.D.,” 10 p.m., NBC. Some classic questions re-surface here: Can two wrongs make a right? Are there times for a cop to look the other way? Are there any moral certainties on the mean streets? This solidly crafted episode (shown here) has no answers, but offers a stark and startling conclusion.
2) “Modern Family,” 9 p.m., ABC. This is the 11th and final season for a terrific show – one that took the best-comedy Emmy for five straight years. Now this title says it all: “The Last Halloween.” Phil (who loves the holiday) has one more chance to frighten Claire (who doesn’t). Mitchell and Cam have already seen the end: They used to celebrate with Lily, but she’s going to a party by herself.
3) “The Goldbergs,” 8 p.m., ABC. “The Rocky Horror Picture Show” arrived 44 years ago, becoming the world’s leading comedy/horror/musical. Now “Goldbergs,” set in the ’80s, has Barry throw a party with a “Rocky Horror” theme; Barry Bostwick, who starred in the original, plays Professor Majors. That starts ABC’s second night of Halloween comedy. There are parties on “Schooled” (8:30), with a Blair Witch” theme, and “Single Parents” (9:30). with Angie and Poppy trying to be the cool moms.
4) “Riverdale,” 8 p.m., CW. Even on cheery holidays, life is dark and bleak in Riverdale. So you know on Halloween it will be wretched. Former students at Jughead’s school are vanishing … Archie’s safe-place party for kids has unwelcome crashers … Also, Cheryl is haunted.
5) “Baroness Von Sketch” season-opener, midnight and 12:30 a.m. ET, IFC. It shouldn’t surprise us that this show is wildly inconsistent. Most sketch shows are – from the new “Cake” to the 45 years of “Saturday Night Live.” The first “Baroness” half-hour has a few good moments and others that take a so-so idea and stretch it forever. But the second starts with a sharp zinger, then has some more strong sketches … including a pitch for a truly awful kids’ show. It’s very adult and, occasionally, quite funny.