Caroline tries to raise money for an expensive pair of new pants through an online fundraising site. Meanwhile, Max’s new smartphone comes between her and Caroline.

The Jeffersonian team investigates the murder of Jamie Delcampo, a member of the Estrellas Locas gang, whose remains were found in a burnt out car. Meanwhile, having taken time off from the FBI in the wake of Pelant's latest assault on the team, Sweets ultimately decides to help with the investigation when he discovers that a young boy from the center where he volunteers is the son of one of the gang members.

Continuing from the season premiere episode, Beckett races against time to find a stolen toxin capable of killing tens of thousands of people. To make matters worse, Castle was exposed, leaving him with less than 24 hours to live.

From "Sean Saves the World", actor Sean Hayes; musical guest Sting.

Mordecai and Rigby help Skips return a teenage Skips to the 1700s.

Another soldier in the army of evil, the Sandman, seeps into the dreams of the residents of Sleepy Hollow. By infiltrating their minds at night, he tortures them to the brink - all because they, at one time, turned a blind eye to justice. When the Sandman seemingly sets his sights on Abbie, she is forced to begin to face her past - and her institutionalized sister Jenny. With Ichabod by her side, and her life at stake, the duo must try to defeat the Sandman and continue their fight against evil.

Liz and Red track an assassin who disguises his kills in large-scale catastrophes.

Congress shuts down the government, Butterball appeases male cooks, and "Breaking Bad" creator Vince Gilligan discusses the final season.

From "Big Bang Theory", actor Simon Helberg; musical guests The Naked and Famous.

As the auditions continue, CeeLo, Xtina, Adam and Blake fight for the brightest new artists.