Speaking of non-history on History, the third season starts for “Vikings” (History, 10 p.m.), which begins with Ragnar near death.
The miniseries “London Spy” (BBC America, 10 p.m.) comes to a conclusion, as Danny finds out the truth about Alex and how he died.
Your DVR may explode with politics if your head doesn’t first. Tonight has not only the second half of the Republican Town Hall (CNN, 8 p.m.) from South Carolina with Donald Trump, Jeb Bush and John Kasich, hosted by Anderson Cooper, but there is also a Democratic Town Hall (MSNBC, 9 p.m.) from Las Vegas featuring Hillary Clinton and Bernie Sanders, hosted by Chuck Todd and Jose Diaz Balart.
Further, “The Rachel Maddow Show” (MSNBC, 8 p.m.) has Vice President Joe Biden in for an interview.
Judges vote on the second half of the Top 24 who sang this week and the Top 14 are announced on “American Idol” (Fox, 9 p.m.).
Chip has to take care of his nieces on “Baskets” (FX, 10 p.m.).
On “Portlandia” (IFC, 10 p.m.), Claire dumps Doug and they both start dating others.
More time travel on “DC’s Legends of Tomorrow” (The CW, 8 p.m.) as some Legends land in a Russian Gulag circa 1986.
A second episode of “Fashion Police” (E!, 8 p.m.) this week deals with New York Fashion Week.
Randy Couture and Gabriel Iglesias compete in a “Lip Sync Battle” (Spike, 10 p.m.).
Meredith has trauma on “Grey’s Anatomy” (ABC, 8 p.m.) and not just because the network president was replaced Wednesday.
More details come on Annalise’s past on “How to Get Away with Murder” (ABC, 10 p.m.).
Bernadette is pregnant on “The Big Bang Theory” (CBS, 9 p.m.).
Bacon plays a role in tonight’s “Recipe for Deception” (Bravo, 10 p.m.).
John tries to look younger on a new “Life in Pieces” (CBS, 8:30 p.m.).
“An American in Paris” (TCM, 8 p.m.) kicks off tonight’s 31 Days of Oscar on Turner Classic Movies, followed by “The Band Wagon” (10 p.m.), “Strangers on a Train” (midnight), “Thirty Seconds Over Tokyo” (2 a.m.) and “Crossfire” (4:30 a.m.).
The NBA is back in action after its All-Star break. Games include Chicago at Cleveland (TNT, 8 p.m.) and San Antonio at Clippers (TNT, 10:30 p.m.).
Men’s college hoops include Tennessee at Kentucky (ESPN, 7 p.m.), Charleston Southern at Gardner-Webb (ESPNU, 7 p.m.), Missouri State at Wichita State (CBS Sports, 7 p.m.), SMU at Connecticut (ESPN2, 8 p.m.), Wisconsin at Michigan State (ESPN, 9 p.m.), Cincinnati at Tulsa (CBS Sports, 9 p.m.), Belmont at Eastern Kentucky (ESPNU, 9 p.m.), Utah at UCLA (ESPN2, 10 p.m.), BYU at San Diego (ESPNU, 11 p.m.) and California at Washington (Fox Sports 1, 11 p.m.).
In hockey, it’s Detroit at Pittsburgh (NBC Sports, 7 p.m.).
Daytime Talk
Kelly & Michael: Kiefer Sutherland, Travis Fimmel, Jazmine Sullivan. The Talk: William Shatner, Debbie Matenopoulos. Ellen DeGeneres: Adele. Wendy Williams: Jason Sudeikis, Stephen James. The Real: Matt McGorry.
Late Talk
Stephen Colbert: Tea Leoni, Amanda Peet, Triumph the Insult Comic Dog, Jeffrey Tnenhaus. Jimmy Kimmel: Kerry Washington, Nikolaj Coster-Waldau, Jason Derulo. Jimmy Fallon: Vince Vaughn, Ryan Seacrest, Dead & Company. Seth Meyers: Kiefer Sutherland, Carice van Houten. James Corden: Katie Couric, Gillian Jacobs,Anders Holm. Carson Daly: Stephan James, Lower Dens, Lenny Abrahamsson. Tavis Smiley: Jason Sudeikis, Stephen James. Trevor Noah: Ice Cube (rerun). Larry Wilmore: Jemele Hill (rerun). Conan O’Brien: Tom Jones, Oliver Hudson (rerun).