Finn is led to both a friendly civilization, and a mysterious crash site.

Eileen and the others want to watch baby sea turtles hatch and descend into the ocean.

April stays optimistic as Arizona begins testing on her baby; Dr. Herman plans out a crash course in fetal surgery; and Owen and Callie encourage each other to get back into the dating scene. Meanwhile, Meredith, Maggie and Bailey use the 3D printer to gain a better understanding of their patient's tumor.

Hollywood Week is here, Part 2! Host Ryan Seacrest and judges Jennifer Lopez, Keith Urban and Harry Connick, Jr., continue their search for the next superstar! More than 200 contestants were chosen from around the country and now the true test begins. Tonight, the singers will form lines of 10 and be asked to perform for the judges again. Those who survive will move on to the group rounds.

Leonard and Sheldon publish a paper which is widely accepted except for comments from an internet troll. Meanwhile, the girls reminisce about embarassing incidents from their past which include internet videos featuring Penny and Bernadette.

Determined to celebrate Bonnie's birthday, Elena convinces Jeremy that it's what Bonnie would have wanted. After piecing the broken ascendant back together, Elena, Jeremy and Damon attempt to send Bonnie a message, but the situation turns dire when they make an unsettling discovery. Meanwhile, after uncovering Stefan's secret about his great-niece Sarah Salvatore, Enzo enlists a reluctant Matt to help interfere with her life. Elsewhere, Stefan keeps a close eye on Caroline as she unconventionally attempts to cope with everything going on around her. Lastly, realizing it might be time to move on with his life, Jeremy contemplates leaving Mystic Falls for good.

Concerned about the way Bonnie is handling Alvin's death, Christy attempts to get her some professional help.

As chaos ensues at the Factory, leaving the fate of Red and the task force unknown, Cooper struggles to rescue his team from the detention facility. It's a race against time to prevent Luther Braxton attaining confidential information.

As the castle prepares for the Winter's Ease Feast, King Antoine of Navarre reveals to Francis and Mary England's plan for revenge against France. Bash learns that an "undead" man has been seen in the village and his efforts to track the man down lead him to a mysterious woman in white. Meanwhile, Catherine finds out the cause of her hallucinations.

When a youth pastor is found murdered at a church, Backstrom and his team at the Special Crimes Unit must solve the case while navigating the tenuous terrain of a possible cult. Meanwhile, Backstrom's ex-fiance, Amy Gazanian, is recruited by the Chief of Police to head up the newly formed Civilian Oversight Committee with the task of investigating questionable conduct within the Police Bureau, pitting Backstrom's squad against hers.

Walden fears if he breaks up with Ms. McMartin, it will jeopardize his adoption of Louis. Also, Alan hesitates when Lyndsey asks him to move in with her.

Marilyn Monroe's timeless beauty inspires the designs of red carpet gowns; a Hollywood legend visits the workroom.

With Olivia still missing, the team comes together to do whatever it takes to find her and get her home safely.

The pranksters try their hand at fencing before going to a salon to style hair. The loser has to make a presentation.

School is back in session after the holiday break and the entire university is talking about Annalise's missing husband. The Keating Five continue to be questioned by the police and we find out exactly how they've been dealing with the guilt of killing Sam. Meanwhile, Annalise tries to keep things business as usual by taking on a new client who is in the mob, but Hannah continues to pressure her for answers.

Rookie CIA analyst Alex O'Connor is assigned his first case - to examine the statements of a defecting Russian spy, who claims that rogue elements within her organization are planning a catastrophic attack that will bring America to its knees. Unbeknownst to Alex, his parents, Katya and Mark, are part of the dormant Russian sleeper cell he's investigating, and an unwelcome friend from the past arrives on their doorstep to give them a new mission: turn their son into a spy before his investigation unmasks them. With nowhere to turn, Katya and Mark must choose - flag, or family.

The gang gets to work early so they can spend some quality time together.

Kath and Dave decide to host an unforgettable 4th of July barbecue; the Mayor searches the deep Web for some very special fireworks.

When a debt collector is murdered, Holmes and Watson try to narrow down the suspect pool from thousands of consumers who owed the victim money. Meanwhile, Watson's relationship with Andrew progresses when he asks her to meet his father for the first time.

Bob Odenkirk

Conan O'Brien was joined by Jeff Bridges and Lily Collins, plus music from Slash featuring Myles Kennedy and the Conspirators.

Larry addresses the debate over genetically engineered babies with panelists Gabrielle Union, Penn Jillette, Holly Phillips and Rachel Feinstein.

Tonight guests are actor Will Smith and film actress Rosamund Pike. Musical guest will be musician Jack White.

David Letterman was joined by Martin Short, plus music from Bettye Lavette.

Jemaine Clement, Taika Waititi and Mike Phirman compete to determine who has the funniest take on the day's pop culture.

Seth was joined by David Duchovny, Candice Swanepoel, Lily Aldridge and Brooks Wheelan.

Host: John Mayer; Guests: Jim Carrey, Bob Weir

Vic Reeves and Bob Mortimer join host Jimmy Carr and team captains Sean Lock and Jon Richardson for more comic innuendos, unpredictable conundrums and unforgivable puns in the comedy quiz. Jack Whitehall is with Countdown's resident lexicographer Susie Dent in Dictionary Corner, while Joe Wilkinson 'helps' Rachel Riley with her mathematical sums and duties.

Coming Soon...

More of the best bits from Series L.

Among the guests on Graham's sofa are: actress Julianne Moore, Oscar-nominated for her role in Still Alice as a professor with early onset Alzheimer's; Irish dancing king Michael Flatley, on his farewell tour of Lord of the Dance; top comedian Bill Bailey; and Cuba Gooding Jr, Oscar-winning star of Jerry Maguire, talking about the Martin Luther King movie Selma. Plus Gregory Porter and Laura Mvula performing Water Under Bridges.