The top seven young chefs are faced with a mystery box challenge made from their nightmares! The judges task the contestants with facing their fears and turning ingredients they hate into delicious, restaurant-quality dishes. The winning chef will advance in the competition and take home e-bikes for their entire family.

Gemma and Tina are at odds with one another, and Dave and Calvin try to bring them back together. Meanwhile, Marty is sick and not handling it well, so Malcolm fills.

New changes on the field begin to create tension between Spencer and Jordan at the worst possible time. While working on her latest project, Olivia deals with the emotional fallout of digging too deep into the past. Elsewhere, Asher is forced to make a difficult decision after losing one of his star players.

Live from Hollywood, the Top 20 take the stage again as host Ryan Seacrest reveals the 10 hopefuls America has voted to advance. The judges select the remaining 4 who will round out the Top 14.

The dancers split into two groups and take on music video challenges choreographed by Emmy nominee Luther Brown and choreographers Phillip and Makenzie Chbeeb.

Country powerhouse Keith Urban is enlisted as Mega Mentor to help prepare the artists for the Knockouts. The coaches pair two artists to perform solo against each other, then select a winner to move on to the Playoffs. Each coach has one steal.

When Bob second-guesses selling MaxDot, a new buyer presents a compelling offer. Also, the prospect of new wealth has Abishola stuck between her conservative nature to hide it and Nigerian pressure to flaunt it.

NCIS comes under attack by a mysterious enemy from the past; Vance tries to mend fences with his estranged son by explaining why, despite the ongoing dangers of his job, he still chooses to stay at NCIS.

When a Marine is murdered during training on the Big Island, the NCIS team tracks the suspect deep into the woods and discovers a disturbing secret.

Jon Stewart is baffled by the current "teams" in the Middle East, the news team debates which historical martyr Donald Trump resembles most, and author David E. Sanger talks "New Cold Wars".

Stephen welcomes author Salman Rushdie, and actress Anna Sawai.

Lucy joins forces with Maximus to find Thaddeus, who absconded with the head. Meanwhile, Betty becomes the overseer of Vault 33 and reassigns part of the population to Vault 32.

Esther approaches a politician for help to reveal the source of the disease; Leo pleads with Esther to leave Bergen before she catches the disease; Charlie, believed to be infected with the disease, is to be sent away from the farm where he works.

As terror ensues inside the mine, a riot breaks out at the Arcacia lab. Gio desperately attempts to locate the group in the tunnel before it's too late.

The crew gives their harrowing testimonies, but a pact forces them to withhold the truth. Will Wilches tip the balance in their favor... if he survives?

Liz learns the truth about Martha and asks Donny to move out. It's a fresh start for him and Teri, but his memories stop them from getting truly close.

A world-famous billionaire hires the Evanses to live and work in his high-tech lair. Back at home, Dalvin misses his family while they're away.

George and Charles embark on a historical trip to Spain. Mary attempts one last throw of the dice to ensure absolute power.