The pressure is on for the remaining 18 young home cooks, who must debone an entire fish and make a MasterChef worthy dish, or be at risk in a challenge. Not only are there big stakes at hand - the winner will receive a special advantage worthy of the effort - but the cooks also bring heart to the table as they reveal how their cultural heritages influence their cooking styles.

Katie feels left out when Greg becomes fast friends with the newest member of the Westport Historical Guild; Oliver fears Cooper is ditching him when he sees on social media that Cooper lied about his weekend plans.

Director Vance is notified by the Pentagon that the nuclear submarine Gibbs and Bishop are aboard to conduct a murder investigation has gone radio silent.

Gael's art show brings together members of the Coterie for an evening that has emotions running high, especially amongst Gael, Bryan, Callie & Jamie. Mariana develops a new app idea to pitch to Evan, but the issues at Spekulate continue to threaten to thwart her plans. Callie learns some shocking information about the Jamal case.

To fulfill his showbiz dreams, Timmy enters a contest to appear on "The Partridge Family" and takes matters into his own hands when he doesn't hear back. Elsewhere, Peggy takes a driving test in order to get her license, but anxiety sets in and things don't go according to plan. In secret, Peggy tries a few questionable shortcuts to becoming a legally licensed driver, and in the process, drags the Cleary kids into her web of deceit.

After Kyra's estranged father, Perry, shows up and wants to bring Kyra home to Houston, Dre and Bow work to show him the amazing life they can provide for her. Meanwhile, the kids go on a mission to get her one last chili dog from Larry's.

Johnny fills in for Moira at the annual Mayor's Roast, as David distracts Moira from finding out that Stevie and Patrick have been taking private dance lessons.

A history of Beth and Randall through the ages.

Umma and Appa accidentally damage a close friend's car. Janet discovers that Gerald isn't as loyal a friend as she thought. Jung worries that his birthday message to Shannon might be too personal.

Maggie and Dana struggle to find justice for victims murdered by a serial killer who left a ghoulish mark on all of his victims, while the mayor limits the investigation in order to prevent economical loss.

Frustrated by her inability to remember what happened the night Rosa died, Isobel turns to Liz for help regaining her memories. Elsewhere, Max and Cameron investigate a series of strange deaths in the town, while Sheriff Valenti reveals information to Kyle about his father.

An unexpected discovery strengthens Oak Island's connection to the Knights Templar.

In a look back at 1968, Don must try to help his father.

Junior designs a monster trike and takes a huge financial gamble. Senior and his team struggle to build two bikes in three weeks for a Florida resort. Senior and Junior ponder the idea of building a bike together.

Lena and Martin announce to the kids that Lisa Apple's baby, Annie, is their half-sister, and Martin is surprised when they aren't interested in meeting her. Lena feels the burden of being stuck in the middle between Martin and Lisa but still offers to help bring both families together. Meanwhile, Mason overhears Lena and Martin's conversation about Lisa's financial difficulties and decides to start a fundraising campaign to help. Elsewhere, Lena feels a bit of empty nest syndrome.

After a reshuffling of assignments, Pride is no longer Special Agent in Charge of the Southeast and returns to the New Orleans NCIS office during the investigation of a missing petty officer.

Emily Byrne struggles to find a new normal with her son and ex-husband. However, a serial killer and a conspiracy threatens more than just Emily's family.

A massive earthquake rocks the city and throws everyone's patrols and its citizens into chaos. Agent Russo recommends Officer Nolan for a protective detail of Brad Hayes, a man whose dealings have put a target on his head.

Sarah uncovers more of Katie's secret and has a confrontation with Nick. Enzo struggles with a disappointing new roommate. Ava makes progress with her case.

Daniel meets a woman who makes a living polishing turds, breaks down a video of a man and his sinking pickup truck and checks out some soap-cutting videos.

Jim examines the many flaws in America's nuclear weapon stockpile, takes a critical look at doomsday-prepping advice and sits down with North Korean defectors.

Craig risks it all in a desperate attempt to save Earth and all of mankind. Minutes before the end of the world things go sideways, Sam and Laura kiss.

Democrats demand the release of the Mueller report, Trevor gives a rundown of high-profile screwups, and Bobby Hall (a.k.a. Logic) discusses his debut novel "Supermarket".

Stephen welcomes actress Keri Russell, lifestyle expert Martha Stewart, and TV host Conan O'Brien.

After a harrowing ordeal, OA and Karim find themselves locked inside a labyrinth of puzzles. Nagging doubts prompt Homer to snoop on Dr. Percy.

At the club's opening, Chico's antics threaten to ruin the night, and Nelson approaches Adélia. The next day, Malu reads a critic's review of the club.

James welcomes retired professional basketball player Kobe Bryant, actress Cara Delevingne, with musical guest Tom Walker.

Chris faces a hard choice: leave with the Critters forever or go back to Earth.

As Caden spirals downwards, Kathryn learns the dark secrets of Max's media empire and has a fateful decision to make.

With Jo now co-managing Cachet Windows, she uses her power to expose Lavender and Sam's past, gaining the upper hand over Vincent.