Vikings (HIST, 9:00 p.m.) — The second half of season four begins with Ragnar returning to Kattegat with the goal of righting past wrongs. Unfortunately, his sons, all grown, are less than pleased that he’s returned and after his defeat in Paris, Ragnar wants to head back to Wessex to confront King Ecbert, but feeling betrayed by their father, only his crippled son Ivar is ready to join him on the journey. Meanwhile, Lagertha plans to reclaim her home and Bjorn sets off on his first major expedition.
Christmas in Rockefeller Center (NBC, 8:00 p.m.) — It’s that time of year again. The 84th annual tree lighting ceremony is here to officially kick off the Christmas season. Tony Bennett, Neil Diamond, Josh Groban, Garth Brooks and Dolly Parton should be on hand to ring in the festivities.
Arrow (CW, 8:00 p.m.) — Oliver wakes up in an alternate universe in which he never boarded the Queen’s Gambit or got stranded on that damn island. In his “new life,” his parents are still alive, Laurel is his fiancee and everything seems perfect, until her begins to notice strange happenings that make him question the nature of his reality. Meanwhile, Felicity and the recruits handle a new threat with the help of the Flash and Supergirl.
Lethal Weapon (Fox, 8:00 p.m.) — Riggs must decide what to do with all that cash he’s carrying around after finally selling his home in Texas as he cares for a young boy who witnessed a deadly casino heist. Murtaugh proves he can ride a hog with the best of them.
Survivor: Millennials vs. Gen X (CBS, 8:00 p.m.) — It’s time to snuff out the tiki torch of another castaway.
The Goldbergs (ABC, 8:00 p.m.) — Adam and Barry feud over casting in the school musical and Beverly goes out of her way to make Erica’s easiest class a nightmare.
Speechless (ABC, 8:30 p.m.) — JJ shows interest in a girl so the family decides to help up his game and Ray has the crew practice getting to school on time (for once) so that the kids don’t miss an upcoming field trip.
Criminal Minds (CBS, 9:00 p.m.) — A man who fully believes he is Dr. Tara Lewis’ brother arrives in town, prompting the BAU to investigate how he seems to know everything about her life and why she can’t get in contact with her real sibling.
Empire (Fox, 9:00 p.m.) — Cookie attempts to impress Angelo’s mother with an elaborate family dinner but some old childhood videos force her to confront her own past and the truth about her father.
Modern Family (ABC, 9:00 p.m.) — Gloria, Phil and Cam swear a secret oath to keep incriminating personal information hidden from their spouses as Haley tries to bond with Rainer Shine’s teenage daughter.
Dolly Parton’s Christmas of Many Colors: Circle of Love (NBC, 9:00 p.m.) — Another installment following the early years of one of country music’s biggest icons, this latest Dolly Parton made-for-TV movie follows her family as they recover from devastating event while living up in the mountains of Tennessee.
Frequency (CW, 9:00 p.m.) — Frank and Julie are forced to have an honest conversation as he searches for additional clues to the Nightingale’s first murder.
Blackish (ABC, 9:30 p.m.) — Junior brings home his first girlfriend — a white girl — which causes Bow to finally confront unresolved feelings about her own biracial identity. Elsewhere, Zoey remodels the twin’s room as part of a project for her design class and Dre asks Charlie for help in dealing with a white, female client.
Code Black (CBS, 10:00 p.m.) — Willis, Leanne and Jesse risk their lives to operate on an injured officer who has an explosive bullet lodged in her leg while Mario, Noa and Guthrie deal with their own difficult patient: a magician.
Designated Survivor (ABC, 10:00 p.m.) — President Kirkman deals with the fallout from a leaked report of Majid Nassar’s death and handles a national emergency that forces him to reconsider the election to vote for a new House of Representatives.
Incorporated (USA, Syfy, 10:00 p.m.) — Set in 2074, this new dystopian drama imagines what a world would look like if big corporations took over for failing governments, ruling a rapidly decaying world. (Hey, we’re not too far off from that now.) The series premiere follows a junior executive, Ben Larson, who hides his real identity in order to infiltrate a very sinister corporate world and save the woman he loves.
Younger (TV Land, 10:00 p.m.) — Kelsey and Liza strike a new deal, inciting a bidding war over Colin’s new novel.
South Park (Comedy Central, 10:00 p.m.) — Season 20 is winding down but the show has a bit more left in the tank. Tonight’s episode tackles internet trolls and the presidential election when a revealing internet history program throws the town into a panic.
Legends of Chamberlain Heights (Comedy Central, 10:30 p.m.) — Grover tries to break free of his brother’s shadow by entering a video game tournament.
LATE NIGHT GUESTS
The Tonight Show Starring Jimmy Fallon: Felicity Jones, Billy Crudup, Car Seat Headrest
The Late Show With Stephen Colbert: Lauren Cohan, Sleigh Bells
The Late Late Show With James Corden: Jessica Alba, Kate Mara, Ken Jeong
The Daily Show With Trevor Noah: Tomi Lahren
Conan: Nick Offerman, Johnny Pemberton, Dorothy