While investigating the deaths of Gulliver and Nancy, the dynamic duo of Seattle's winning dance team, Liv (Rose McIver) and Ravi (Rahul Kohli) go undercover as dance partners to size up the other contestants aka the prime suspects. Meanwhile, Peyton (Aly Michalka) confronts Major (Robert Buckley) after she's told that one of his soldiers was out of line during a routine lice check at the school. Lastly, Clive (Malcolm Goodwin) and Bozzio (guest star Jessica Harmon) receive a shocking surprise during Lamaze class.

Lucifer's so-called epiphany has Chloe worried, but it's his physical transformation that's really freaking her out. Also, Maze gives Eve a pep talk.

Amy and Dina visit Cloud 9 corporate to fix problems caused by Sandra's misguided activism. Jonah tries to sabotage an employee meeting. Garrett tries to prove to his co-workers that he's a good person.

To avoid giving up a percentage of his sales, street vendor Scrap splits off from his boss and recruits his friend Cool to mount a rival operation.

As fog begins to cover Seattle, the doctors of Grey Sloan navigate through personal complications. Meredith and Alex attempt to save Gus, while Levi talks some sense into a struggling Nico.

Blum is out for revenge when he represents a group of Reddick, Boseman & Lockhart's ex-clients who claim the firm overcharged them. When Lucca finds out she's a candidate for an open partner position, she begins to question her reputation within the firm. Meanwhile, Diane helps Kurt with a work project.

Tandy and Evita must go to great lengths when Tyrone is put in a dangerous situation. Meanwhile, Adina looks to someone surprising for help.

A suburban housewife wants to go home. But where - and what - is home, really?

Sheldon and Amy await big news.

The remaining seven designers dig deep in this challenge and use their skills to bring attention to a social cause they care deeply about. Judge Elaine Welteroth mentors each designer on channeling their creative voice for change, a skill she honed in her time at Teen Vogue. Just as the designers start to get comfortable creating this emotionally charged look, they're hit with a Flash Sale twist.

The queens must write and record a verse in a performance of RuPaul's hit single "Queens Everywhere", and guest on RuPaul's podcast with Michelle Visage. Choreographer Todrick Hall, style superstar Carson Kressley and Ross Mathews guest judge.

Amy and Jonah find themselves on opposing sides as corporate tries to win over employees by showering them with treats. But when the company's tactics grow more extreme, everyone must band together to save one of their own.

Sheldon invites the entire school to a party for the Nobel Prize announcements. Also, Meemaw learns more about Dr. Sturgis' past, and Georgie's desire for cable TV leads to a standoff between him and George Sr.

Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; and Koothrappali makes a new friend, as the gang travels together into an uncharted future.

Jake and Charles investigate a dangerous serial killer. Holt continues to spar with his rival, Commissioner Kelly. Terry finds out about whether or not he has passed the lieutenant's exam.

The members of 'Station 19' pack their gear and head to Los Angeles, California, to help battle a deadly wildfire raging out of control. While the team works to evacuate residents, they meet Terry, and Ben makes a split-second decision that changes both of their lives. Andy and Sullivan continue to explore their attraction to each other.

While hanging out with Max in his food truck, Murphy is shocked to hear a familiar voice screaming outside; Murphy offers to watch Chloe so Dean can go on a date, but things get a little crazy after she does the one thing he asks her not to do. Lastly, Murphy's worlds of Max and Darnell and Guiding Hope begin to collide.

In this special episode, gator season may be over but Troy Landry is still battling monsters in the swamp. A snake invasion is threatening the community and Troy calls in some friends to help him track down the sinister Voodoo Python.

Desperate circumstances call for desperate measures, as Jake, Holt, Amy, Terry, Rosa and Charles must ally themselves with old enemies.

Sun's out, fun's out? Tune in to see Joe, Q, Murr and Sal in their very best/worst vacation challenges and punishments, with some helpful hints along the way.

Sam searches and takes a breath.

The SWAT team goes in pursuit again of the militant group The Emancipators when the criminals hold a live stream kangaroo court to publicly execute city politicians. Also, Hondo fights to lift Darryl's spirits; Deacon feels unworthy as he prepares to receive one of the LAPD's highest honors; and Street catches a break in the search for his missing parolee mother, Karen Street.

When a teenager is found dead in the Hudson River, Lt. Benson suspects Rob Miller is behind the mysterious death but can't prove it. Despite having only circumstantial evidence, ADA Stone takes the case to court before Miller can destroy more lives.

On Election Day, Jay turns to Kate and the team for help after his parents and other voters are illegally intimidated at their polling place. Meanwhile, Roger and Jill's relationship is at an impasse when Sandra learns that they are romantically involved and challenges Jill's judgement. Elsewhere, Seth gets assigned to the case of a lifetime, but his anxiety increases when he is appointed a bodyguard to help protect him, all while Sandra and Ted take their relationship up a notch.

When Louise and Tom discuss a breakthrough in their relationship, Louise wonders if it was, in fact, a breakthrough; Louise asks Tom to move back in.

When Councilwoman Price tries to take nudity out of the annual Firefighters' Beefcake Calendar, the crew must get creative to maintain the integrity of its sexy (and oily) tradition.

Neil deGrasse Tyson and war correspondent Christiane Amanpour find order in the chaotic debate over journalistic neutrality. Joining Neil are comic Eugene Mirman, investigative journalist Azmat Khan and conflict journalist Judith Matloff.

Actress Jessica Alba; actress Yara Shahidi; The Head and the Heart performs.

Stephen welcomes actors Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Mayim Bialik, Melissa Rauch (from "The Big Bang Theory"), with a musical performance by Barenaked Ladies.

In the wake of nearly connecting with Lila, the family struggles to come to terms with the idea that she may in fact be alive and in serious danger. Audrey and Otto become unwitting participants in both of Marius' cons.

Six months later, Harry sinks deeper into depression, Grizz and Sam bond, Gordie arrives at a theory about West Ham, and Elle puts a plan into action.

James welcomes actress Halle Berry, actress Anjelica Huston, and actress Allison Williams.

When Launchpad finds out that Scrooge and Dewey intend to make a gritty movie about Darkwing Duck, he decides to track down Darkwing's original actor Jim Starling to stop it.

Living arrangement boundaries have been pushed just a little too far. Nudie strolls, hygiene complaints and a general lack of self awareness see everyone, bar Ainslie, ready to kick Ben out.

Upon discovering Baymax's inherent abilities to detect if a person is lying, Hiro attempts to use Baymax to uncover proof of Liv's evil doing.

An extraordinary creature transfixes the town and a race to capture the beast ensues, while Silas must face the consequences of his attack on Yeardley. Elsewhere, Opechancanough makes a bold political move and Jocelyn finally weakens the unfathomable Willmus.

Team captains Paul Merton and Ian Hislop are joined by guest host Rhod Gilbert and panellists Tom Allen and Emma Barnett.

Jonathan Ross and Katherine Ryan joins Adam Hills, Josh Widdicombe and Alex Brooker to chew over the topical moments of the past week.

Guest host Jack Whitehall welcomes Star Wars and Game of Thrones star Gwendoline Christie, currently playing Titania in A Midsummer Night's Dream at the Bridge Theatre. Actor Luke Evans talks about his new comedy film Murder Mystery, and singer Paloma Faith discusses her acting debut as the villain in Batman TV prequel Pennyworth.