In this Callie and Arizona centric episode, the couple takes a look into the problems that have contributed to their troubled marriage. At work, Callie immerses herself in the Veterans' project, and Arizona struggles to impress Dr. Herman. Meanwhile, Richard leans on Bailey for advice.

When Damon and Bonnie realize that uncovering a time in Damon's past may provide clues to finding their way home, Damon is forced to relive one of the worst days of his life. After an awkward run-in with Jo at the hospital, Alaric steps in to help Jeremy get his life together and cope with the loss of Bonnie. Elsewhere, Stefan attempts to show Elena what it's like to start over and create a new identity, while an unsuspecting Matt finds himself in a disturbing situation when Tripp lets him in on a dark secret. Lastly, Stefan, who is desperate to regain some normalcy in his life, is stunned when an unexpected visitor shows up.

In a pool challenge, the teams are tasked to hold a percentage of their body weight in order to keep their trainers from falling into a pool, and the last-place team loses its trainer for the week. Elsewhere, two eliminated contestants team up at Comeback Canyon; and one contestant gives her trainer a look at her past.

Shadowy riders have attacked a shepherd, Lord Conde and Bash investigate. Mary reconsiders her relationship with Lola. Leith returns to court.

The group decides to ditch their Amish clothes, but one of them goes missing. Miriam focuses on her dreams, Matt's marriage takes a drastic turn and Bates is blind-sided by his girlfriend back home.

Tedward is concerned for Rebecca's safety after a convict who's case she tried is released. She contemplates getting a gun and handles the case of a dim and unaware thief. When the ex-con thanks Rebecca for giving him a chance, Tom is persuaded to push for lighter charges on the mentally unstable criminal.

New suspects make the list as the detectives learn that Danny had some secrets of his own. Meanwhile, Detective Carver is also keeping things hidden that could affect his ability to finish the case.

In the conclusion of the two-part Season 13 finale, the still-standing designers present their collections at New York Fashion Week, after which the winner is named. Guest judge: Emmy Rossum.

Olivia and the team continue to investigate Catherine's case, but Olivia is distracted when Jake stops returning her calls. Meanwhile, Cyrus falls deeper into the rabbit hole with Michael, David realizes what it's like to finally be a winner in DC and Fitz seeks answers to Jerry's death.

A Harvard dental chair from the early 1900s and some "Wayne's World" memorabilia are featured on the show.

Alex, Joel and Maggie face a mysterious case. Charlie has a unexpected link with a patient. Zach questions his abilities as a father.

Joe, Sal, Q, and Murr ham it up behind the counter of a famous NYC deli, and head to Union Square where they break the ice with bizarre behavior while selling popsicles. And tonight's loser wishes Bingo wasn't his name-o in a humiliating and cringe-worthy punishment.

When Zelda's aunt suddenly dies, she struggles with the decision to invite Andrew to the funeral. Andrew tries to support Zelda through her grieving process and has convinced himself that she wants him there, but is afraid to ask. Meanwhile, Stu and Stephie vie for the attention of a musician at the funeral and Big Bird looks to trim the fat at Wallflower in her own special way.

A tree with an 1800s revolver and a Renaissance etching by Pietro Facchetti are featured on the show.

Annalise takes on a tough case defending a minor who fatally shoots his police officer father. Meanwhile, Annalise and Sam continue to argue over his relationship with Lila, and Wes and Rebecca begin to question Annalise's motives. In flash-forwards, we learn more about Laurel's relationship with Frank and why he was calling her the night of Sam's death.

Max gathers intel on his new friend in search of common ground. Though Kristina fears he'll get his heart broken, he is more determined than ever to pursue this new relationship - especially after some botched advice from Adam. Amber makes an unexpected connection and finds herself smitten. Julia's new love interest shows up at the family BBQ and runs into Joel. Crosby lets loose with Zeek and Jasmine grows concerned about her husband.

Neil Patrick Harris, Damian Lillard, Kiesza

Shailene Woodley, Jack McGee

Jo Brand, Roisin Conaty, Paul Foot and Ray Mears are the guests on the show.

The team start to investigate the shocking murder of an American classics student called Rose Anderson whose body is discovered in the canal with stab wounds to the neck and abdomen.

The popular satirical news quiz, with team captains Paul Merton and Ian Hislop, guest host Victoria Coren Mitchell and panellists Katherine Ryan and Janet Street-Porter.

Lee's big mouth has got him and Lucy invited to a christening party thrown by new neighbours Toby and Anna, and now they have no time to find the perfect present for the baby who has everything.

James Corden introduces out-takes, gaffes and unseen footage from the recent series of the sports-based comedy quiz, featuring team captains Jamie Redknapp and Andrew `Freddie' Flintoff, plus regular panellist Jack Whitehall

Stephen and Alan are joined on the show by Josh Widdicombe, Sue Perkins and Frank Skinner.

Together on Graham's sofa: Sherlock star Benedict Cumberbatch, starring as Alan Turing in The Imitation Game; Timothy Spall, in new film Mr Turner; comedy favourite Miranda Hart; and musical guests Maroon 5, who perform Animals.