Arisa reboots when Lara contacts her creators. Bars and his Liquidators attack Cronos and try to steal the Arisa copy. Safronov races to save Jeanne.

A patient gives Meredith some clarity on her dating situation around the holidays. The strain on Bailey and Ben's marriage comes to a head. Meanwhile, Betty drops a bomb on Owen and Amelia.

Ryn fights to maintain leadership of the pack when her loyalties are questioned over her friendship with Ben and Maddie. Ben interferes in a mermaid ritual and Helen discovers more about her family lineage.

A new Head of Household will be crowned and two more celebrities are nominated for eviction.

Competitors battle opponents in head-to-head challenges designed by Dwayne Johnson, continuing to push their bodies to the limit in hopes of advancing to Mount Olympus and becoming a Titan.

Sam and Dean look to occult lore for a solution to their latest problem, but instead of a resolution, they find much more than either of them had anticipated.

Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa. Also, Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip aboard the "vomit comet".

Sheldon and Dr. Sturgis have their first fight when Dr. Sturgis marks a question wrong on Sheldon's test. Also, Mary takes over for Pastor Jeff when he's out sick

A mysterious sphere threatens the U.S.S. Discovery even as May, in her original form, implements a plan that puts Tilly's life in danger. Saru and Burnham's bond grows when Saru is forced to acknowledge a deeply unsettling Kelpien truth. Pike receives new intel on Spock from a loyal friend.

Terry believes the Pontiac Bandit is stealing cars again, but Jake is convinced his friend wouldn't do that. The rest of the squad fight to keep Shaw's a police bar after some firemen stake their claim to it.

Sharlene and her family keep Lloyd captive; John and Lise find an unexpected ally; John confronts a possible connection to Catherine's suicide.

Following a stay in Europe with her mother, Lizzie returns to Mystic Falls and comes face to face with someone who could make all her wishes come true - including making Hope Mikaelson disappear.

On the eve of the new restaurant opening, Delilah tracks down a handsome expert to help with the last-minute details. Meanwhile, Regina struggles with her overbearing mother who causes friction by bringing up disturbing details of her past.

The Headmaster at Charlie's school asigns Kate with a humiliating task. Lionel presents Anne with an innovative solution to overcome her misplaced aggression. Bad news from Bianca sets Frankie on a path to Juniper, in search of a solution.

Will and Grace's plan to win over Will's new Columbia department head goes awry when he drops dead in their apartment - and they use his phone to text his full recommendation of Will. Karen and Estefan's dislike for each other puts Jack in full damage control mode when he must keep them separate at his birthday dinner.

Ilana visits an old flame to cash out her Bitcoin share; Abbi loses her favorite sweatshirt.

Nate and Annalise both need to keep Gabriel close to ensure their secrets stay hidden.

Special guest John Legend joins the crew as singer/songwriter Andy Grammer takes on "Riverdale's" Vanessa Morgan, and they battle it out for the LSB championship belt.

Hondo reunites with an old flame, FBI Special Agent Elle Trask, when the SWAT team works with the FBI to bring in a separatist group with weapons-grade plutonium. Also, the SWAT team worries they will lose an annual law enforcement charity competition to the Los Angeles Fire Department.

As Stone prosecutes the case of a woman who killed her abusive husband, Benson and her squad wrestle with the duty of testifying against her.

Top Chef alum Ed Lee drops by for a Quickfire that's part trivia, part culinary creativity; Coach John Calipari and the Kentucky Wildcats host a concession-stand cook-off in Rupp Arena; Food & Wine Editor-in-Chief Hunter Lewis joins the judges.

Chase collaborates with another up-and-coming singer, forcing Brooke and Cary to confront their own relationships.

Ronny Chieng talks about raising taxes on the rich, Roy Wood Jr. highlights notable civil rights marches, and journalist Dorothy Butler Gilliam discusses "Trailblazer".

Coming Soon...

Coming Soon...

Stephen welcomes actor Chris Pratt, TV personality Meghan McCain, with musical guest Beirut.

As the present begins to unravel, Nadia's troubled past comes back to haunt her, and Alan worries they're running out of time.

With her friends' help, Carmen tries to break the spell cast upon Mayte by rekindling León's ardor. Later, she learns Lucien's alternate identity.

James welcomes actor Matt LeBlanc, actor Will Arnett, with musical guest Broods.

An unexpected phone call summons Will back home, and he asks Geordie for his help: Will's father has got himself into some trouble. When one vicious beating leads to a grisly murder at a sprawling ancestral home, scandal threatens to engulf the Davenport Family, and life will never be the same for Will again.

Jimmy Carr hosts as Sean Lock and Michelle Wolf take on Jon Richardson and Rob Beckett in the classic words and numbers quiz. Spencer Jones joins Susie Dent in Dictionary Corner.

David Mitchell and Zawe Ashton join Adam Hills, Josh Widdicombe and Alex Brooker to dissect the week's news.

PROGNOSIS: pococurantism PRESCRIPTION: Sandi, Alan, Rhod Gilbert, Sindhu Vee and Ed Byrne. Take orally before bedtime.

Section 20's search for the missing nuclear warhead leads them to India, where three scientists have been kidnapped by a militant; the team gains valuable intel on Anjali Vartak, a rich Hindu with a personal vendetta against Muslims.

Among the guests on Graham's sofa tonight: star of stage and screen Sir Patrick Stewart, in fantasy adventure The Kid Who Would Be King; comedy genius Ricky Gervais, talking about dark new sitcom After Life; Chiwetel Ejiofor, director and star of the inspiring The Boy Who Harnessed The Wind; and music from Jack Savoretti, who performs his latest single Candlelight.