Romero decides to take action; Norman brings Emma to the dance; Norman gets a ride home from Miss Watson.

Lorenzo orders Piero da Vinci to defend his estranged son in court. During a performance for visiting royalty, Leonardo surprises the corrupt judge. Back at his workshop, Leonardo is surprised by the Turk.

An old war buddy catches up with Nolan at the same time a Castithan criminal with a history of violence enters the picture.

From "After Earth", actor Will Smith; musical guests The National.

Thomas must save his brain after he chugs a slushy that freezes his brain.

ABC's Jonathan Karl lies about the Benghazi scandal, Stephen applies for Tea Party tax exemption, and David Sassoon shares his e-book, "The Dilbit Disaster".

From "The Hangover Part III", actress Heather Graham; from "Game of Thrones", writer/producer David Benioff.

The top 10 remaining artists perform live in front of coaches Adam Levine, Blake Shelton, Shakira and Usher for America's vote.