The hospital faces a staffing crisis as the nurses stage a sick-out. Archer and Frost bet on who can discharge their patients first. Charles' distrust of a patient complicates his treatment.

Rita Ora and the finalists get the night started with a showstopping performance of "Pink Pony Club!" The final masked celebrities bring the house down with amazing renditions of "Black Horse and the Cherry Tree", "Moon River", "Freedom! '90", "Stay", and more while the panelists use the biggest clues yet to make their final guesses for a chance to win the golden ear trophy!

One castaway struggles with betraying their allies. Power in the game is up for grabs when one castaway is chosen for a journey and must decide if the risk is worth the reward. Then, paranoia runs rampant when a castaway knowingly tries to stir up chaos.

Laura's temper gets the better of her in the wake of her unpleasant clash with the Paynes,and Ella's successful Bible study takes an unexpected turn when Mrs. Wellington arrives.

Amelia goes undercover to search for clues at Clara's home, while Sherlock goes to prison under pretense of meeting his forever foe, Moriarty.

With the crew stretched thin, a performance efficiency expert evaluates Firehouse 51. Kidd and Severide bond with the mother of the baby they hope to adopt.

Racers travel to Strasbourg, France, where they go head-to-head in a water jousting match.

Ruzek witnesses a tragic accident on an icy bridge, leading Intelligence into a dark, sinister case involving sex trafficking.

Desi Lydic dives into Trump's ominous "big announcement", the president renames the Persian Gulf, another US fighter jet falls off an aircraft carrier, and kids swap tariff-priced Barbies for the promise of economic freedom. In honor of the conclave, Lewis Black sounds off on the Vatican's mysterious process to select a new pope, including this year's parlay options, the surprising number of cardinals taking lessons from the Oscar-nominated "Conclave" film, and the merch being sold to incompetent tourists. "This is the middle of the story, not the end of the story, and it falls on us to write a better end". John Green, an award-winning author and global healthcare reform advocate, sits down with Desi Lydic to discuss his No. 1 New York Times bestseller, "Everything Is Tuberculosis: The History and Persistence of Our Deadliest Infection".

Jimmy welcomes actress Kerry Washington, actor Josh Hartnett, musician Adam Duritz, and a musical performance by Counting Crows.

Stephen welcomes actress Christine Baranski and actor Stellan Skarsgård.

Nora and Mountie Fletcher track down a dubious claim. Hannah and Wyatt have a tough decision to make. Maggie tends to the orphans. Trouble brews for the ranchers.

The tapestry weaves together as police, outlaws and felons all find themselves at Andrew Harting's trust event. Will Zenzi finally find her vengeance?

Matt tries to get Zoë Kravitz to thank him in her award acceptance speech.

During a rare moment of solitude, Astoria attempts to work on her design portfolio.

Protests rage across the streets of Paris. To stop the violence, Talleyrand sends Carême to confront a revolutionary who may be fanning the flames.

Two young friends get caught up in a gangster's scheme.

It's Nick's turn to be on the outs as Anne joins the other couples for a New Year's ski vacation - and he struggles to fit in with Ginny's friends.

The first team task of the series brings the usual awkwardness, but also the joys of Stevie Martin inventing a new way for humans to move, and Fatiha El-Ghorri sweeping the lawn with a small broom. Elsewhere, Rosie Ramsey has a visceral reaction to mental arithmetic, Mathew Baynton strikes his own face with a grape, and Jason Mantzoukas destroys a shower.

The extent of the conspiracy is revealed. Elliot's past and present collide and the Gangs take revenge, changing London forever.