“It’s Always Sunny in Philadelphia” (FX, FXX, 10 p.m.), the longest running live-action comedy on television, returns for its mind-bending 18th (and possibly final?) season. The first of tonight’s first two episodes concerns the possible marriage of Frank (Danny DeVito) with poultry heiress Sam (Carol Kane) — though the episode’s title is “Frank Marries a Corpse.”
A 2024 documentary gets a timely replay in the summer when all things Homer are suddenly hot again. “Odysseus Returns” (PBS, 10 p.m., check local listings) follows the amateur historian and local Greek politician Makis Metaxas, who claimed to have found a 3,000-year old tomb containing the bones of Odysseus on the island of Kefalonia, proving that the character we now associate with Matt Damon was indeed a real person.
Students fight back against a ICE raid on “All American” (CW, 8 p.m.).
“Dancing with the Stars: The Next Pro” (ABC, 8 p.m.) tests dancers’ teaching abilities.
The death of Alexander the Great is one of “History’s Greatest Mysteries with Laurence Fishburne” (History, 9 p.m.).
Both “The 1% Club” (8 p.m.) and “The Quiz with Balls” (Fox, 9 p.m.) end their seasons tonight.
Joe is determined to prove his worth to Capt. Sandy on “Below Deck Mediterranean” (Bravo, 8 p.m.).
“The McBee Dynasty: Real American Cowboys” (Bravo, 9 p.m.) seem to be splitting up.
Body swapping occurs by mistake on “The Librarians: The Next Chapter” (TNT, 9 p.m.).
“Dr. Pimple Popper: Breaking Out” (Lifetime, 9 p.m.) ends its second episode with a pair of episodes.
A Mormon who disappeared on a desert road trip is the case on “Somebody Knows Something” (Freeform, 10 p.m.).
“Pitmasters” (Food, 9 p.m.) is down to its final four BBQ making teams.
Officials look for a smuggled luxury car on “Contraband: Seized at the Border” (Discovery, 8 p.m.).
“Little Singles” (TLC, 9 p.m.) indulge in some Palm Springs partying.
The third season of the streaming spy drama “Lioness” (Showtime, 8 p.m.), starring Zoe Saldana, gets a sampling on premium cable.
The MMA flick “Beast” (Starz, 10 p.m.) makes its cable debut.
Rosalind Russell is featured all day on Turner Classic Movies’ Summer Under the Stars with “The Casino Murder Case” (6 a.m.), “Rendezvous” (7:30 a.m.), “Live, Love and Learn” (9:30 a.m.), “Night Must Fall” (11 a.m.), “Design for Scandal” (1 p.m.), “They Met in Bombay” (2:30 p.m.), “Roughly Speaking” (4:15 p.m.), “The Velvet Touch” (6:15 p.m.), “Auntie Mame” (8 p.m.), “Gypsy” (10:30 p.m.), “The Trouble with Angels” (1 a.m.) and “A Majority of One” (3 a.m.).
Baseball has Detroit at Pittsburgh (ESPN, 7 p.m.)
WNBA action has Dallas at Golden State (Peacock, 10 p.m.).
Daytime Talk
Kelly Ripa and Mark Consuelos: Mark ballas, Kyle Richards. The View: Jill Biden (rerun). Kelly Clarkson: Amanda Seyfreid, François Arnaud, Emily Kaufman (rerun). Drew Barrymore: Jennifer Aniston, Emeril Lagasse (rerun). Jennifer Hudson: Kerry Washington, Elisabeth Moss, Kate Mara, Mychal Threets (rerun). Tamron Hall: Cynthia bailey, Justice Cole (rerun).
Late Talk
Jimmy Kimmel: Hanah Waddingham, Ana Gasteyer, Bella Brown, guest host Rosie O’Donnell. Jimmy Fallon: Will Forte, Ariana Madix, Mike Tomlinson, Dan White. Seth Meyers: Maya Rudolph, Michael Gandolfini (rerun).