Business becomes personal for Sherlock when he is forced to partner with his estranged brother, Mycroft, to solve a case with life-or-death consequences.

Cristina looks to Meredith for advice as she assesses her future at the hospital. Derek and Amelia work together on a difficult surgery involving conjoined twins. Meanwhile, Jo is spread too thin when she tries to work on several cases at once and Stephanie realizes the truth about Bailey’s bubble boy case.

Louis C.K.; Amy Sedaris. Also: a performance from Broadway's "Rocky".

Portlandia gets away for the weekend to New Beavertown, Oregon. Toni and Candace lead a feminist retreat for women. Kath and Dave do their best to relax. Peter and Nance go on a walking tour of the town. Guest starring Jason Sudeikis, k.d. lang and Angel Bouchet.

Mary enlists a mercenary to help her, which forces her to realize there are sacrifices and lives she is willing to risk to save her country. Francis embraces his role as Dauphin to lead France in a brutal battle against England, and finds a new ally in Leith. Meanwhile, as Lola grows closer to Lord Julien, she gets increasingly suspicious that he is going to betray her.

Forrest becomes deeply invested in a new job that he's obligated to quit, lives a day as if it's his last and receives an ultimatum from Suzanne while pretending to be Irish.

Professor Proton helps Sheldon deal with grief; Leonard gets into a competition with Penny; Bernadette and Amy prepare a "Star Wars Day" gift for the guys.

Jesse Watters mocks America's youth, CNN waits endlessly for news on Flight 370, and poet Saul Williams talks about his role in Broadway's "Holla If Ya Hear Me."

Episode info coming soon ..

Andrew Garfield; Mary Lynn Rajskub. Also: Chvrches perform.

When Tyler turns up at the Salvatore house with the news that Markos’ plan to break the witches’ curse puts Stefan and Elena in imminent danger, Damon suggests they hide out in the remote cabin once owned by Caroline’s father. Once there, it becomes obvious to Caroline that Stefan and Elena are keeping a secret, so Damon comes up with a parlor game designed to expose the truth. A ghostly presence at the cabin uses violence and fire to make itself known. Meanwhile, Matt takes charge of Tyler’s plan to get information from one of the Travelers, and Bonnie continues to keep the truth about the Other Side from Jeremy, despite warnings from Grams.

Ragnar and King Horik return to Kattegat; Ragnar places his trust in those who have stood by him.