A patient's condition sparks a conversation between Richard and Maggie about Alzheimer's disease; April and Jackson struggle to return to their normal lives and Arizona is faced with the reality that Callie is moving on. Meanwhile, Meredith reveals her biggest fears about Derek.

Two finalists' journeys will end as America's votes are revealed and the Top 10 perform LIVE!.

With the help of Bonnie and Kai, Damon and Elena set forth a plan to rescue Damon's mother Lily, who is trapped in the 1903 prison world. Meanwhile, when Caroline's plan for Stefan backfires, she is left to pick up the pieces. Elsewhere, back at Whitmore College, Enzo and Alaric's attempt to reel Caroline back in doesn't quite go as planned when they realize they're outmaneuvered. Lastly, an unexpected gift from Bonnie leaves Damon shaken to his core.

As evidence mounts against Liz in the case of the murdered DC Harbormaster, a federal judge makes it clear to her that she will face severe criminal charges. Reddington and Ressler jump into high gear to exonerate Liz but the only solution is to find the recently vanished Tom Keen - wherever he may be operating in the world.

Catherine is suspicious that Mary and Condé are having an affair; Francis becomes ill; Bash's life is in peril; Leith is forced to guard Claude.

Olivia springs into action when she hears of a woman intending to expose sex secrets of some of DC's most elite. Meanwhile, Elizabeth fears that Mellie's sister could be detrimental to their political aspirations.

The crowd goes wild with the Pawn Stars when concert posters signed by Johnny Cash and Stevie Ray Vaughn rock and unroll the shop. Will Corey get them for a song, or will they be out of tune? Then, Rick feels the rush when checking out original blueprints of the Hoover Dam. Will he flood the seller with offers or will the deal hit a wall? And later, when Chum breaks Rick's new expensive sunglasses, will he come clean or replace them on the cheap?

Get fired up with the Pawn Stars when a 1800s Wilkinson turret rifle shoots into the shop. Will Rick go in guns blazing or will he fail to pull the trigger? Then, Chum buckles up when celebrity engraved matchboxes from the private jet, "The Starship One" flies in. Will he be able to land these collectibles or will the price be plane crazy? And later, Chumlee volunteers to help the guys write descriptive cards for the shop. Will he get his facts straight or will he need a history lesson?

The O'Connors send the task force on a wild goose chase to Italy, while Alex tracks down the Black Dagger triggerman. Giancarlo Esposito guest stars.

Nearly a month after the arraignment of the accused, the emotional complications of all involved continue to deepen. Carter's sister Aliyah (Regina King), a devout Muslim, arrives to support her brother despite their strained relationship, and her stark disapproval of his involvement with Aubry. Simultaneously, Alonzo receives an update about Tony's case that sheds light on his family life which makes him question himself as a good father. Hector's troubles compound when he's recognized by a fellow gang member and his loyalty is tested. Barb continues her relentless fight for justice and works with Nancy Straumberg (Lili Taylor), who is the head of a Victim's Rights Group to try and get another hate crime charge added against Carter.

Following Aisha's emotional business trip, Hector surprises her with a romantic getaway during which each of their secrets is finally revealed.

Peter's pursuit of Khalid dead ends; and he and Cohen follow clues found in Emma's journal. In other events, Debbie takes Josh for an unauthorized outing; and Avram continues his journey to Jerusalem.

Archer and Lana travel to Wales for a romantic getaway of aiding separatists. Story Inspired from a Rousing Tale by Matthew Rhys.

The fleet returns to Kattegat to find tragic circumstances await. Lagertha learns that her Earldom has been usurped and convinces Ragnar to travel to Hederby with her in an effort to reclaim her title. Ragnar causes great surprise when he announces the next raid. The Seer has interesting prophecies for Rollo.

Will Ferrell

Coming Soon...

Larry addresses the backlash against culturally diverse superheroes with Jean Grae, Mike Lawrence, Phil Jimenez and Sana Amanat.

Ben Stiller, Tim Gunn, Rixton

Rob Huebel, Malin Akerman & Erinn Hayes compete to determine who has the funniest take on the day's pop culture.

Coming Soon...

The Musketeers must put their lives on the line when the Queen is accused of treason. They have no choice but to steal her away from the Palace to safety, while they search for evidence to prove that Rochefort is a Spanish spy. However it soon transpires that nobody is safe from Rochefort's grasp, not even the King, with devastating consequences.

A compilation of highlights from the recent run of the chat show, which has featured the host in conversation with guests including Meryl Streep, Will Smith, David Beckham, Jennifer Aniston, Benedict Cumberbatch, One Direction and Judi Dench.