Fareed Zarkaria reports on the precarious state of the Republican Party in the special “A Radical Rebellion” (CNN, 8 p.m.).
Another loss in Boston is mourned as the second season comes to a close for “City on a Hill” (Showtime, 9 p.m.).
“Couples Therapy” (Showtime, 10 p.m.) reaches a second season finale. Which seems unrealistic; most therapy just continues forever.
Some super crazy stuff happens tonight on “Mare of Easttown” (HBO, 10 p.m.).
“NCIS: New Orleans” (CBS, 10 p.m. makes an arrest in the bar firebombing as Pride and Rita plan their wedding.
The S-Bahn Murderer, who operated during World War II Berlin, raping and killing women on commuter trains, is told on “Murderous History” (Smithsonian, 9 p.m.).
“The Rookie” (ABC, 10 p.m.) ends its third season with a finale. It has been renewed for a fourth season.
It’s not just case closed on the finale of the documentary miniseries “Confronting a Serial Killer” (Starz, 9 p.m.) — dozens of cases close.
“The Nevers” (HBO, 9 p.m.), which had to shut down production during lockdown presents the sixth episode of the series tonight, after which there will be a long break until they can complete the final six episodes of the first season.
A seventh season begins for “Good Witch” (Hallmark, 9 p.m.), starring Catherine Bell and James Denton.
“NCIS: Los Angeles” (CBS, 9 p.m.) works with the CIA in solving a string of murders.
Linda fights for a dumb local tradition on “Bob’s Burgers” (Fox, 9 p.m.).
“The Great North” (Fox, 8:30 p.m.) reaches its first season finale with wedding preparations. A second season is on its way.
The Secret Service makes a sudden decision on “Good Girls” (NBC, 10 p.m.).
“Uncensored” (TV One, 8 p.m.) profiles the rapper who died last month, DMX.
Iris is rattled by her father’s illness on “The Girlfriend Experience” (Starz, 9 p.m.).
“Ellen’s Games of Games” (NBC, 8 p.m.) is on, even as the announces the end of her talk show.
Zoey faces a difficult goodbye on the season finale of “Zoey’s Extraordinary Playlist” (NBC, 9 p.m.).
Jesse Metcalfe and Sarah Lind star in “Poisoned in Paradise: A Martha’s Vineyard Mystery” (Hallmark, 8 p.m.).
“The Equalizer” (CBS, 8 p.m.) helps a woman locate her husband, who is mixed up with extremist bombers.
A British secret service agent visits “The Simpsons” (Fox, 8 p.m.) looking for a Russian spy who may be grampa.
Parasitic infections invade “Naked and Afraid XL” (Discovery, 8 p.m.).
“Shahs of Sunset” (Bravo, 8 p.m.) returns for a new season with Reza and MJ traveling to Palm Springs.
What’s Jenna Elfman doing on “Fear the Walking Dead” (AMC, 9 p.m.) anyway?
“The Story of Late Night” (CNN, 9 p.m.) gets to the showdown of Carson’s successor.
Wayne gets a new truck on “Bless the Harts” (Fox, 7:30 p.m.).
“American Idol” (ABC, 8 p.m.) unveils the top three finalists.
The clock is turned to 2045 on “DC’s Legends of Tomorrow” (CW, 8 p.m.).
“Batwoman” (CW, 9 p.m.) faces Gotham’s addicts.
Simone gives her son an ultimatum on “Married to Medicine” (Bravo, 9 p.m.).
On “Godfather of Harlem” (Epix, 9 p.m.), Adam Clayton Powell wants to end the filibuster on the Civil Rights Bill.
There’s a couple of New York stories on Turner Classic Movies tonight, “Metropolitan” (8 p.m.) and “East Side, West Side” (10 p.m.).Greto Garbo stars in an updated, silent adaptation of “Anna Karenina” in “Love” (midnight). It’s followed by two films about running: “Run Lola Run” (2 a.m.) and “The Loneliness of the Long Distance Runner” (3:45 a.m.).
fBaseball includes Angels at Boston (MLB, 1 p.m.) and St. Louis at San Diego (ESPN, 7 p.m.).
Hockey has more Stanley Cup playoff kickoffs with Islanders at Pittsburgh (NBC, noon) and Tampa Bay at Florida (NBC Sports, 7:30 p.m.).
NBA action includes Boston at New York (ESPN, 1 p.m.) and Memphis at Golden State (ESPN, 3:30 p.m.).
In the WNBA, it’s New York at Indiana (CBS Sports, 2 p.m.) and Phoenix at Connecticut (CBS Sports, 7 p.m.).
Final rounds are played in the Byron Nelson Tournament (Golf, 1 p.m.; CBS, 3 p.m.).
NASCAR runs its Drydene 400 (Fox Sports 1, 2 p.m.).
Sunday Talk
ABC: Rep. Liz Cheney, Dr. Rochelle Walensky of the Centers for Disease Control. CBS: Dr. Anthony Fauci, Sen Joni Ernst, Sen. Kirsten Gillibrand, Rep. Adam Schiff, former director of U.S. Cybersecurity Chris Krebs, former FDA commissioner Dr. Scott Gottlieb. NBC: Walesky, Rep. Alan Kinzinger, Rep. Dan Crenshaw. CNN: Walensky, Gov. Larry Hogan, Rep. Fred Upton, author Jane Harman. Fox News: Walensky, Cheney, Edwin Fountain, World War I Memorial Commission.