Vandal Savage retreats behind the Iron Curtain in the early 1980s, a string of nuclear scientists begins to mysteriously disappear. The team follows Vandal's trail straight into the heart of the Soviet Union in an attempt to find his next target. Ray tries to bond with a beautiful Soviet scientist, Valentina Vostock, in the hopes of finding out Vandal's next move. When Valentina rejects him, it's Snart to the rescue. Stein pushes Jax to be better, which frustrates Jax and ultimately threatens the Firestorm matrix. Rip asks Sara to train Kendra.

Meredith is brutally attacked by a patient, and Penny is the one who discovers her. The doctors of Grey Sloan Memorial rush to stabilize Meredith and remain by her side in the harrowing aftermath.

Idol fan favorites Ruben Studdard, Fantasia, Scotty McCreery, Lauren Alaina, Caleb Johnson, and Nick Fradiani return to mentor and sing with the contestants. Then, after giving it their all, the first round of performers will find out who will make the cut. The judges vote on who will stay in the competition to become the next, and final, American Idol.

Sheldon and Amy host a live Valentine's Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore.

When Tyler and Clementine go to a guitar store, Tyler gets uncomfortable when the attractive salesman, Ian, repeatedly hits on her. Also, Tim's tattoo artist, Lois makes a spelling error on a tattoo he got as a Valentine's Day surprise for Heather, Matt's plan to celebrate Valentine's Day with Colleen doesn't go as well as he hoped, and Greg and Jen discuss whether they should have another baby.

Christy tries to help Julian, a handsome, newly sober AA member, but her attraction to him complicates things. Meanwhile, Bonnie jumps at the chance to attend a lavish charity gala with Jill.

After a missing child that has been presumed dead turns up alive, Red and Liz work with the taskforce to search for a dangerous woman who may be kidnapping children. Meanwhile, Tom faces shocking consequences after his plan to help Liz goes awry.

Clarke discovers the mastermind behind a devious plan. Kane struggles to keep the peace. Meanwhile, Jasper's grief drives him to reckless behavior.

The designers must tap into their past to create a look inspired by a moment that kick-started their fashion career.

It's been six months since Olivia and Fitz have broken up, and they are both handling their newfound freedom in very different ways. Meanwhile, the Pope and Associates team take on a case that could lead to a national crisis.

Joe, Sal, Murr and Q pose as unreceptive receptionists in an office waiting room, then they head off to a wax museum where they mingle with the stiff crowd. In tonight's double punishment, the two losers are taken on a chopper ride from hell.

Quite a few weeks on from the time Wes shot Annalise, he and the rest of the Keating 5 attempt deal with the ramifications of what happened that night as Annalise works toward making a recovery.

Hayden Panettiere and Eva Longoria battle it out.

When the identity of the leader of the Resistance, Geronimo, is revealed, Proxy Snyder sees an opportunity to improve his standing in the Colony, and he comes down with a vengeance. Meanwhile, Katie struggles with the weight of her choices, and her husband questions her loyalty.

Wozniak's suspicions land on Saperstein, forcing Harlee to convince Stahl to arrest Saperstein in order to keep him safe. Harlee visits her abusive ex, Miguel, who tasks her with tracking down the man who committed the murder for which he is imprisoned.

The Baskets family celebrate Easter over brunch but drama erupts.

After preparing a full lunch service, the chefs must clean up and do it all over again for dinner; the judges scrutinize everything, including concept, food, service, and consistency.

Adam and Ders make plans for a party but Blake's new girlfriend manages to ruin it.

The Weirdos decide to go to the beach but issues arise when their hearse breaks down; an office worker is annoyed because his co-workers want to use his new charger.

Captain Gregson's colleague from Narcotics asks Holmes to orchestrate the perfect heist inside the heavily armed and virtually impenetrable compound of a drug-dealing biker gang. Also, when Watson assists Fiona Helbron, who helped her on a recent case, she makes a surprising discovery about Holmes.

Jordan Klepper immerses himself in Donald Trump's political circus, Roy Wood Jr. investigates the decline of American fast food, and Ben Stiller chats about "Zoolander 2".

Carl Reiner, Jacob Tremblay and Emily King are tonight's guests.

Grace Parra examines online dating preferences, and Larry discusses Internet trolling with Alexis Ohanian, Grace Parra and Ricky Velez.

Jimmy is joined on the show by Kristen Wiig, Bob Odenkirk and Elle King.

Stephen welcomes Kelsey Grammer, Fred Armisen, "Playboy" cover girl Sarah McDaniel, and a musical performance by Ty Segall and the Muggers.

Chris is joined by three celebrity guests who battle it out to determine who has the funniest take on the day's pop culture.

Daryl comes up with the idea to start a pest removal business while Stewart decides to become a superstar DJ and host his own rave.

Seth is joined on the show by Susan Sarandon, Alison Brie, Katie Nolan and Jaleel Bunton.

James is joined on the show by Chiwetel Ejiofor, Grace Helbig, Jake Lacy and Albert Hammond Jr.

Inspector Bucket has been officially taken off the case investigating Jacob Marley but before he returns to his old station he is determined to have one last shot at solving the crime.

The murder investigation continues and Perez and his team are determined to find out the identity of the person who helped Michael Thompson's killer. Perez, Sandy and Tosh are soon all under threat.

There's a whiff of conspiracy when a woman is mysteriously kidnapped from her office in the City. Harry and Suri must pull out all the stops if they are to track her down before it's too late.

Reeling from the bad publicity after the assault on the store, Harry finds himself forced to admit the true state of his financial affairs when D'Ancona piles on more pressure, and later finds himself embroiled in a costly spat with media magnate Lord Wynnstay. Mr Grove and Miss Mardle plan their very special forthcoming event, and Meryl enlists Tilly's help for a very important task - fuelling Miss Ellis' ire in the process. Mae and Victor grow closer, leaving Jimmy to become increasingly jealous.

The award-winning show is back for a seventh series. Adam Hills hosts along with Josh Widdicombe and Alex Brooker. Guest Richard Osman joins them to pick over the week's news.

A melange of M-themed subjects are mixed and matched with Jo Brand, James Acaster, Bill Bailey and Alan Davies.

Drake's life unravels as he questions whether he sent an innocent man to the gallows.

Graham chats to Oscar winner Julianne Moore, starring in film drama Freeheld, Australian comedian and actress Rebel Wilson, appearing in How to be Single and entertainment superstars Ant and Dec. With music from Little Mix, who perform Secret Love Song.