The Pazzis prepare a murderous plot for Easter Sunday. The Turk tells Leonardo where to find the Book of Leaves. Lucrezia makes a confession as Leonardo attempts to save the Medicis.

Following the big storm, Nolan and Tommy find an American astronaut who has been in an induced sleep for the past several decades.

From "Despicable Me 2", actor & comic Russell Brand; from "Man of Steel", actor Michael Shannon; musical guests Haim.

The squad scrambles to garner a confession when the pregnant wife of a big-time film director is found murdered. Meanwhile, just as things seem to fall into place under Raydor’s leadership, new Deputy D.A. Emma Rios challenges Raydor’s intentions as Rusty’s guardian.

While Karen counsels Savi to hold a beat before confessing to husband Harry about her night with Dominic, Savi gets an entirely different reaction from April. Meanwhile, April investigates a woman's shocking claims that her late husband, Paul, had another life; Joss finds a friend in new client Alex, and Karen warily agrees to meet with Sam Grey.

Mordecai plans to kiss Margaret at a meteor shower.

The NSA whistleblower explains himself, violent protests break out in Turkey, missile launch officers dislike their jobs, and Dan Savage criticizes DOMA.

Lena and Mike disagree about punishing Brandon. Jesus tries to cover for Mariana at risk to himself. Callie gets blamed for Mariana’s transgression. Jesus and Lexi embark on a secret relationship.

While Jim searches for the killer who smoked the owner of a vast BBQ empire, Daniel enters a BBQ competition with his biggest rival -- his brother Drew.

From "This Is the End", actor Jonah Hill; Indy 500 winner Tony Kanaan.

The remaining five artists perform for America's votes and Usher performs.