Maggie empathizes with a patient whose mother is afraid to consent to her son's risky surgery. Ripley treats someone from his past. Ahmad questions her instincts after her actions have unexpected consequences.

Mark adjusts to his first day of college as a commuter student. Meanwhile, Becky gets into a disagreement with Beverly Rose's music teacher over a song.

Eighteen new castaways embark on the adventure of a lifetime when they are left stranded on the breathtaking islands of Fiji. Tribes must be the first to crack the code to earn essential camp supplies. Then, three castaways go on a journey away from their new tribes.

When a celebrated therapist and best-selling author is murdered, a bickering Max and Ellis go undercover as a married couple at her wellness retreat and discover more than their chakras.

Lexi combines the first two floors of the newsroom, leaving Nell to share a cubicle with T.J., a popular sportswriter who's friends with everyone ... except her.

Guy Fieri invites three all-star chef moms and three all-star chef dads to a team showdown. In a relay-style event, the teammates work on their dish one at a time in 10-minute shifts. The first chef does the shopping and prepping, the middle chef does most of the cooking and the final chef plates and presents the team dish. Only the first chef on each team is told they're making an elevated kids' favorite that must include three classic lunchbox treats. The chefs in the later shifts will be working blind, cooking and presenting dishes based on their best guess of what the teammate before them was making. The team that successfully creates the best and most accurate version of the requested dish will go on a relay shopping spree for up to $15,000!

Firehouse 51 welcomes back some familiar faces and says goodbye to Brett. Violet scrambles to decorate Brett's wedding venue. A call at the expo center takes a shocking turn.

When Barbara's church choir uses the gym for rehearsals, Ava notices tension in the group. Jacob's eagerness for a full social calendar worries Gregory. Melissa and Janine investigate a new substitute.

Intelligence teams up with ASA Chapman to take on an abduction case involving a teenager. The case hits close to home for Voight, leading him to take a personal interest in finding justice for the victim.

In New York, it's the end of an era. In California, Truman tries to usher in a new era with a hunky beau.

Harry tags along on Ben, Kate and Max's family trip, hoping the mayor will lead him to answers.

Tae-oh, In-ha, and Hye-won run towards the same desire. They are drawn to one another by fate.

Michigan natives Michael Kosta and Jordan Klepper debate their state's primary, "Dr". Troy Iwata rates politicians' mental fitness, and writer Sloane Crosley discusses "Grief Is for People".

Jimmy welcomes actress Kate Winslet, actress Robin Wright, and a musical performance by Maya Hawke.

Stephen welcomes political commentator Chris Hayes and actress Carrie Preston.

Lewis Hamilton's been loyal to Mercedes for 13 years. But winning comes first - and with his contract up for renewal, he has to make a tough decision.

Stranded in dangerous territory, Omega and Crosshair must work together.

Yogi and Boo Boo play hooky from work at an old, abandoned fun park where some meddling kids mistake them for monsters.

Jo's life back home is not how she remembers it, and growing tension with Magnus adds to her feelings of alienation.

Christian is offered a job that will forever change the course of his life. Coco struggles with her outsider status as she's self-exiled in Switzerland.

Happy St. Cthonk's Day! (The St. stands for scientist). While Sleech and Matt unexpectedly spend the holiday together, Klak does something equally festive: an autopsy.

Sabrina and Vince respond to a gun call at a library.

As an attack on the Northern Water Tribe looms, Katara challenges a master Waterbender, Sokka meets a princess, and Aang takes Kuruk's words to heart.

Months earlier, the poaching gang assembles and heads into the jungle for the elephant hunt; while in present day, Aruku leads Mala and her team into the jungle to retrace their steps to the crime scene.

An ambitious boy grows up and joins an intense war of desires to become a star of his own

Over a decade since their great romance started, Jack and Alice face their greatest obstacle. Their relationship has survived everything thrown their way but with the greatest battle ahead, is it possible that love can overcome anything?

Lord Sugar's candidates launch a new Formula E team before pitching for sponsorship, but questionable designs jeopardise multi-million-pound negotiations.

The smell of meat lures in uninvited guests - among them, a familiar face emerges. To move forward, they must work together to defeat the Undine.