
The Dunphys try to kick-start Luke's Halloween party; Cam confronts his Halloween nemesis; Jay plans to go to a party at an old enemy's home to deliver an unforgettable trick.

Darlene crashes Mark's college trivia night to prove how smart she is; Neville finds out the money he loaned Dan was used for something other than its intended purpose.

A dead convict controls Homer; Homer and Marge are on "Jerry Springer"; the kids meet Itchy and Scratchy.

Homer causes troubles at the nuclear plant; Bart and Lisa X-ray the Halloween candy; the family murders Ned Flanders.

A violent cell of extremists looks to extract vengeance by blowing up half of Los Angeles, potentially killing thousands; Hondo questions if he still has what it takes to lead the squad.

A homeless man's murder leads Intelligence to a criminal who has evaded capture for years; Rojas has a troubling experience with a young mentally ill man.

The team tracks two brothers who are set on getting revenge against members of the company that caused their town's environmental destruction; Sarah meets the rest of the LaCroix family, including Jess' sister.

When a farmer's wife disappears, the tests of a plant pathologist and a dendrochronologist lead to a surprising revelation.