Serena Williams is guest judge on the 18th season finale of “Project Runway” (Bravo, 9 p.m.), which ends once more during New York Fashion Week, and finalists that may include Geoffrey Mac, Nancy Volpe-Beringer, Sergio Guadarrama and Victoria Cocieru (they’ll trim the field immediately in this second half of the finale).
There’s nothing more photogenic than those huge Burmese pythons traversing Florida. The new spin-off “Swamp People: Serpent Invasion” (History, 10 p.m.) goes after the creatures in the Everglades, with some of the stars from “Swamp People” (History, 9 p.m.).
It’s the first season season finale for “The Unicorn” (CBS, 8:30 p.m.), where Wade still misses Jill.
“Mom” (CBS, 9 p.m.) reaches its 150th episode.
On the imported Korean series “Hospital Playlist” (Netflix, streaming), from Lee Woo-Jung and Shin Won-ho, is about five doctors at the same hospital, who have been friends since medical school. Call it K-drama; they’re also in a band.
Mary Harron’s 2019 movie “Charlie Says” (Showtime, 9 p.m.), about young women in the Manson cult, makes its premium cable debut.
“Waka & Tammy: What the Flocka” (WEtv, 10 p.m.) follows the home life of Waka Flocka, the rapper named like a “Sesame Street” character.
Sam gives her friends a marital intervention on “Better Things” (FX, 10 p.m.).
The anniversary of Jon’s death gets people reminiscing on “A Million Little Things” (ABC, 10 p.m.).
“Outmatched” (Fox, 8:30 p.m.) welcomes Alyson Hannifin and Eddie Kaye Thomas, joining star Jason Biggs in a quasi-“American Pie” reunion.
The season of “A Year in Music” (AXS TV, 8:30 p.m.) ends in 1991, when R.E.M., U2 and Metallica were on the charts. The host is also a flashback: Matt Pinfield.
George St. has a run-in with the librarian on “Young Sheldon” (CBS, 8 p.m.).
On “Last Man Standing” (Fox, 8 p.m.), Mike is disappointed his pal is going to an art gala instead of a bass festival.
Captain Holt deals with a personal loss on “Brooklyn Nine-Nine” (NBC, 8:30 p.m.).
On “Grey’s Anatomy” (ABC, 9 p.m.), a wealthy inventor needs some help.
Molly Shannon and Demi Lovato guest star on a new “Will & Grace” (NBC, 9 p.m.).
“Tommy” (CBS, 10 p.m.) is pressured by the mayor to solve a kidnapping.
A drug bust makes way to a bigger case on “Deputy” (Fox, 9 p.m.).
“Jersey Shore: Family Vacation” (MTV, 8 p.m.) consults a psychic.
Jorge might be losing his coveted performance spot on “Katy Keene” (CW, 8 p.m.).
“Restaurant: Impossible” (Food, 8 p.m.) returns to a restaurant on Fort Bragg, N.C., then goes to Delray Beach, Fla. at 9 p.m.
A drunk driver causes a crash on “Station 19” (ABC, 8 p.m.).
On “Everything’s Gonna Be Okay” (Freeform, 8:30 p.m.), Matilda learns to ride the New York subway.
Jane is happy when her brother visits on “The Bold Type” (Freeform, 9 p.m.). Billy is happy his girlfriend arrives on “The Busch Family Brewed” (MTV, 9 p.m.).
“Legacies” (CW, 9 p.m.) goes to a film noir world.
The trip to Italy on “Very Cavallari” (E!, 9 p.m.) must have been taken pre-virus.
Ambrose goes to extreme lengths to get a confession on “The Sinner” (USA, 10 p.m.).
The English actor Reginald Denny is star on Turner Classic Movies tonight with “Private Lives” (8 p.m.), “Madame Satan” (9:45 p.m.), “Mr. Blandings Builds His Dream House” (midnight), “The Barbarian” (2 .m.), “The Lost Patrol” (3:30 a.m.), “Bulldog Drummond Comes Back” (4:45 a.m.) and “Strange Justice” (5:45 a.m.).
During the day, after a couple of leftover Joe E. Brown comedies — “Polo Joe” (6:30 a.m.) and “Sit Tight” (7:45 a.m.) — the focus will be on Troy Donahue in “A Summer Place” (:15 a.m.), “Parrish” (11:30 a.m.), “Susan Slade” (2 p.m.), “A Distant Trumpet” (4 p.m.) and “My Blood Runs Cold” (6 p.m.).
Spring training games include Toronto vs. Pittsburgh (MLB, 1 p.m.) and Dodgers vs. Cubs (MLB, 4 p.m.).
Men’s college hoops — with or without audiences — include Creighton vs. St. John’s (Fox Sports 1, noon), VCU vs. Massachusetts (NBC Sports, noon), Florida State vs. Clemson (ESPN, 12:30 p..m.), Texas Tech vs. Texas (ESPN2, 12:30 p.m.), South Florida vs. UCF (ESPNU, 1 p.m.), Butler vs. Providence (Fox Sports 1, 2:30 p.m.), George Mason vs. St. Bonaventure (NBC Sports, 2:30 p.m.), Duke vs. N.C. State (ESPN, 3 p.m.), Kansas vs. Oklahoma State (ESPN2, 3 p.m.), Tulane vs. Connecticut (ESPNU, 3:30 p.m.), La Salle vs. Davidson (NBC Sports, 6 p.m.), Baylor vs. Kansas State (ESPN2, 7 p.m.), Villanova vs. DePaul (Fox Sports 1, 7 p.m.), Virginia vs. Notre Dame (ESPN, 7 p.m.), Temple vs. SMU (ESPNU, 8 p.m.), Fordham vs. Duquesne (NBC Sports, 8:30 p.m.), Louisville vs. Syracuse (ESPN, 9:30 p.m.), West Virgnia vs. Oklahoma (ESPN2, 9:30 p.m.), Marquette vs. Seton Hall (Fox Sports 1, 9:30 p.m.), East Carolina vs. Memphis (ESPNU, 10 p.m.) and Arizona State vs. Washington State (Fox Sports 1, 11:30 p.m.).
Daytime Talk
Kelly Ripa and Ryan Seacrest: Angela Bassett, Charli D’Amerlio, Fitz and the Tantrums. The View: Regina Hall. The Talk: Rita Moreno, Iliza Shlesinger, Lacey Chabert. Kelly Clarkson: Shania Twain, Billy Ray Cyrus. Tamron Hall: Catherine Belknap, Natalie Heifer, Adam & Danielle Silverstein. Wendy Williams: Jason Biggs, Big Freedia. The Real: Xosha Roquemore, Alano Miller.
Late Talk
Stephen Colbert: Dixie Chicks, Michael Pollan. Jimmy Kimmel: Patrick Stewart, Tony Hale, Jhene Aiko with Miguel, Pete Buttigieg. Jimmy Fallon: Mandy Moore, Dane DeHaan. Seth Meyers: John Krasinski, Regina Hall, Bones UK, Steve Ferrone. James Corden: Niall Horan, Vin Diesel, Eliza González. Lilly Singh: Tan France. Trevor Noah: Octavia Spencer. David Spade: Colin Quinn, Nikki Glaser, Fortune Feimster. Conan O’Brien: Nick Offerman.