President Martinez orders Director of National Intelligence, Blake Sterling, to root out the mole from their staff, which causes Sterling to question his judgment of people close to him. Sophia reasserts her power over Thomas and the other detainees, and she prepares them for the next leg of their mission. Elsewhere, with the aid of Madeline, Sean continues his hunt for answers, all the while trying to stay one step ahead of the covert agents who trail him.
A harmless investigation turns into an epic quest across time and space.
A delivery guy, a temp worker and a production assistant play roles in pranks. Also: a witness in the witness protection program has a disturbing visitor.
Plum finds an ideal location for the Glimmerberry Ball, but two chipmunks keep crashing her party.
Rigby gets jealous of his brother, Don, when he visits the park to stop an audit and is forced to deal with him until he leaves.
A trip to the South Street Seaport Museum in New York City for a nautical inspired cake; a Jersey celebrity (Nicole "Snooki" Polizzi from MTV's Jersey Shore) orders a cake for her mom.
Castle and Beckett investigate the murder of an NYC subway worker found shot in Central Park. But, while investigating the murder they uncover the abduction of a young boy as well. The team must determine the motives behind the high stakes kidnapping in order to save the young boy's life.
When a reality TV star is murdered, the CSIs investigate the show's cast, the obsessed fans and the stars' hidden pasts.
Jay Leno and Dr. Phil guest star as themselves when international superstar Hannah Montana contemplates removing her blond wig and telling the world she's really Miley Stewart.
Rick unknowingly causes a group of survivors to be trapped by walkers. The group dynamic devolves from accusations to violence, as Rick must confront an enemy far more dangerous than the undead.
A reluctant Susan accepts Lynette's offer to be baby Paige's nanny; Bree meets Keith's parents; Renee makes a proposal that Lynette can't refuse; Gaby fears that Bob might be trying to seduce Carlos after they become friends; and Beth begins to question Paul's motives for returning to Wisteria Lane.
Bo's freelance work earns her a lead on someone who might know something about her mother... but the trail ends at Lou Ann, a death row inmate who claims not to know anything at all. Desperate to prove otherwise, and increasingly convinced Lou Ann is innocent, Bo uses all her Fae connections to try and bust her out of jail. When she has to admit defeat, Bo's goal switches to one of personal vengeance: to find Vex, the Fae that framed Lou Ann, and make him pay.
Worried about the effects of violent video games, Marge encourages Bart and Milhouse to play board games; Lisa becomes smitten with a new student, a vampire; while on a second honeymoon, Homer and Marge rescue a castaway who escaped from his ship.
When Skipper is knocked on the head, he's unable to lead the penguins on an important mission.
Nucky visits Chicago for the Republican National Convention, where he finds himself intrigued by the candidacy of Warren G. Harding over more established candidates. The D'Alessio gang moves in on Nucky's territory at the expense of Eli, who has been watching over his brother's affairs. Margaret finds herself entangled in Nucky's business affairs, while Van Alden struggles with his wife's desire for a child. Rothstein prepares for legal trouble over his role in fixing the 1919 World Series. Nucky asks Jimmy to return to Atlantic City to reinforce his position.
Wanting to have the scariest haunted house on the block, Stan comes up with a ''killer'' setup; Steve competes to win the heart of his overprotective friend's younger sister.
Dexter is called to investigate a horrifying crime scene; the Santa Muerte case leads to a violent standoff between Debra and the Santa Muerte killers.
Peter and Joe team up to execute a series of painful and humiliating Halloween pranks on unsuspecting family, friends and neighbors. While Brian shows Stewie the ropes of trick-or-treating, Meg sets out to attend her first high school Halloween party with high hopes for the evening.