A surprising connection forces Deputy Director Bailey to ask the BAU to take a case involving young D.C. socialites who are bitten by a sadistic UnSub. But when the case turns political, the BAU finds themselves in the crosshairs from a high-powered senator. The team is led to a second shipping container that's rigged to blow.

Jay's sister, Bela, visits Woodstone Mansion and brings along an adoring male friend, inspiring Sam to spark a romance between them in the spirit of the holiday rom-coms she loves. Meanwhile, the ghosts have conjured up a very different holiday plan for Trevor and Bela. Also, Isaac has an awkward encounter with Nigel that forces him to look back on events in his life.

Margaret asks Todd for help on a seemingly straight forward wrongful termination case over a dating app, but with Todd's investigation they quickly realize it's much more complicated. Also, tensions between Margaret and Gus simmer as they come across each other on a dating app.

When the bodies of two Regency Romantic Festival attendees are discovered, the CSI team uncovers a shocking link between their murders and previous cases.

Sam and Thorfinn get caught in the crossfire as the scheme Jay's sister, Bela, and the ghosts have conjured up goes awry. Also, Isaac's marriage to Beatrice sheds light on how apprehensive he has been in communicating his feelings to Nigel.

Whitney and Andrew attempt to bring their chemistry into the real world. Bela over-curates The Foxy's big spotlight. Kimberly accompanies Canaan to the Econ department's awards banquet. Leighton visits the women's center - and Alicia.

A vigilante known only as "The Laughter" terrorizes Chicago's network of rental stores... and he's coming for Rent-T-Own next.

Jimmy welcomes actress Regina Hall, actor F. Murray Abraham, actor Edvin Ryding, singer Omar Rudberg, and a musical performance by Andrea, Matteo & Virginia Bocelli.

Stephen welcomes TV host Andy Cohen, journalist Anderson Cooper, and a musical performance by Louis Cato.

Larry and Jane seek new purpose in Keeg and Kay's absence. Vic attempts to reconnect with his old crew. A mysterious invitation to a retrospective comes at the perfect time for a newly ousted Rita.

An Afghan piano prodigy seeking asylum in NYC fights to bring his mother to the US and reconnect with his passion.

Twig falls into a compost bin, which turns out to be a fighting pit where he must face his cowardice and fight his way out.

The Highest becomes suspicious of Dikahn and Ruth's relationship, Brain blames Andrew for leaving him defenseless, and River offers Zane a solution for Manny's unwelcomed advances.

Julien struggles to show Grace's true colors to Obie. Audrey and Max suspect Aki is keeping a secret. Zoya learns of Nick's betrayal.

Desperate to warn Starfleet of their dilemma, a daring experiment goes awry as Dal inadvertently swaps minds with a Starfleet Vice Admiral.

While Turner experiences yet another disappointing birthday, Simon and K find themselves hobnobbing with the South Suburb's elite.

When Leighton is elected Kappa's campus social chair, the roommates must figure out what sophomore year will look like.

Toby tries to move on. Karen Cooper's case comes to a head. Toby, Seth and Libby attend a reunion party. Libby reflects on her past.

A collision with the Paradox Prism sends Sonic to a parallel world called New Yoke City, where the dull environment looks oddly familiar.

Dana and Olivia search for the answer to what keeps bringing Dana back to the past. Kevin acts the gracious party goer at the behest of his hosts.

Coming Soon...

James welcomes actress Margot Robbie and actress Jean Smart.

The Spidey Team and Reptil investigate rumors of a sea monster.

Team Spidey finds out that Green Goblin converted the dam to pump out polluting goo.

Sandi goes tricking and treating with Ria Lina, Eshaan Akbar, Jimmy Carr, and Alan Davies.

The day after Litvinenko's death, radiation teams swarm across London to secure potentially contaminated sites visited by the Russian spy. Officers discover traces of Polonium at Itsu, a sushi restaurant where Litvinenko met Mario Scaramella before a later encounter with Andrey Lugovoy and Dmitry Kovtun at the Millennium Hotel, which has also tested positive for Polonium. Eliminating Scaramella from their enquiries, Timmons realises Lugovoy and Kovtun are their main suspects and resolves to send a team to Moscow to interview them directly. Now living in an apartment owned by Boris Berezovsky, Marina receives a chilling phone call from

The previous night has left the players with more than just a hangover. With one player already regretting their actions, and relationships tested, accusations soon start to fly.

Guz Khan and Thanyia Moore join Adam Hills, Josh Widdicombe and Alex Brooker

Graham is joined by Tom Hanks, Naomi Ackie and Suranne Jones. Singer Rina Sawayama performs Hold the Girl.