When Lightman investigates an explosion that killed six coal miners, he suspects foul play may be involved and goes below the surface to find the truth; the FBI seeks the Lightman Group's help with another case.
It’s election season, and in the midst of a tight campaign, an incumbent New Jersey senator’s campaign manager falls ill with liver failure and temporary paralysis. Cuddy pushes House to add a female doctor to his team by hiring brilliant third-year medical student Martha Masters in Thirteen’s absence.
Chuck and Blair decide it’s in both their best interests to put the past behind them and end their vindictive games. Nate confronts Juliet after discovering a secret she has been keeping from everyone. Dan and Nate realize they both still have feelings for Serena.
Charlie and Alan try to set up Evelyn with Russell the pharmacist.
Jeff and Audrey finally settle on a surrogate. Meanwhile, Russell's mother, Bunny, comes to town.
Don comes up with an elaborate story about a new job to try to impress Sam.
When Danny's ex-partner is found dead at a Hawaiian luau the Five-0 team's investigation leads them to some dirty cops and a powerful cocaine cartel.
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.
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.