After the murder of a suspected carjacker the team discovers that he may have been involved with a formidable drug lord and was suspected of drug running off Miami's shores.
Russian ire worries the White House, while the Chinese take on CTU, and the damaged circuit board is in surprising hands.
With everything going wrong on Lily and Marshall's wedding day, to everyone's surprise it's confirmed bachelor Barney who tries to fix it all.
Rochelle decides to help tutor Chris for a math competition in algebra, when Chris doesn't think she's helping he turns to his grandmother Maxine for help. Tonya blackmails Drew when she takes the blame for breaking Julius' favorite chair for Drew.
Charlie is shocked when the handyman working on his house beats him out for Chloe's affections. Alan has no sympathy for Charlie's distress.
Hiro and Ando's determination is put to the test. Nathan wants to win the election and he's taking drastic measures to ensure that he will. This episode will feature Sylar, his home life, and where he came from. Jessica and D.L. discover some of the stuff that Linderman wants from them and Micah. Also there is a new hero who is supposed to be holding the key to stopping Sylar.
Patrick's Roadhouse (Santa Monica, Calif.) • Frosted Mug (Alsip, Ill.) • The Penguin (Charlotte, N.C.) Guy goes coast to coast this week in search of some amazing specials. There's the former railroad station dishin' out overstuffed breakfast sandwiches and "The Governator's Special" in Santa Monica. On the South Side of Chicago, one of the few remaining traditional drive-ins rollin' out great Italian beef sandwiches and root beer floats. And in Charlotte, the circa-1954 burger joint cookin' up fried pickles and homemade corn dogs.
As King Henry gains in confidence, his displeasure with the way the Catholic church handles his request for an annulment of his marriage to Katherine of Aragon grows. As a result, Cardinal Wolsey's position is weakening, leaving him vulnerable to his enemies.
The dead body of pro boxer Diesel Swanson has gone missing. Things get weird when a tape shows Diesel getting up and walking out of the funeral home.
The relationship between Christopher and Paulie's falters, while A.J. grows depressed over his break-up with Blanca.
After Chris is expelled from school, he is sent to a boarding school that his grandfather Carter attended, but Chris doesn't exactly fit in. Meanwhile, the chicken returns to pick a fight with Peter.
Susan goes into the woods to try to find Mike. Gabrielle gets into an argument with a meter man who gives her a ticket. Victor is elected mayor, and Gabrielle goes back to teach the meter man a lesson. Edie's ex-husband comes back to collect Travers. Lynette realizes she has feelings for another man.
Homer, Apu, Moe and Skinner volunteer as firemen after Homer's sleepwalking accident injures the town's firefighters. They do some light looting at the fires to make up for not being compensated, but Marge and Lisa shame them into mending their ways.
Dangle visits his ex-wife and her new husband on their anniversary. Meanwhile, Trudy, Clementine, Raineesha, and Cheresa stake-out a lecherous Meth Dealer and his girlfriends.
NorBac searches for the source of a resistant strain of c. difficile; despite his limited vision, Bob proves to be an asset to the team.
The boys use Bubble's love for model trains when they make a plan to smuggle marijuana across the border into Maine. They send a team consisting of Jacob and his "crew" to scout the location, however the scouting team goes missing.
Annie rushes her husband to the hospital when he wakes up with a certain hunch about his heart condition. The kids are a bundle of nerves--especially Lucy--since they don't know whether the news is good or bad. While sitting around in the waiting room, Ruthie and T-Bone decide to get back together, but an unexpected twist of events brings back unresolved issues with the guy who broke Ruthie's heart a year ago.
In the fourth season finale, a hostage situation arises when the entire team is held captive while they're investigating the 2006 killings of a family who had just moved into a new house.
Peggy tries to reach the pinnacle of real estate success by selling houses in the exclusive neighborhood of Arlen Heights, but she winds up selling pots door to door. Meanwhile the real Rusty Shackleford pays a visit to Dale.
On Halloween, Kate Johnson is killed in her bedroom, the victim of a shotgun blast. Her husband Guy is the obvious suspect, having now disappeared. In an odd twist, the couple had been part of a television broadcast the previous Halloween where hypnotist Lee Knight demonstrated that people could be induced to do anything, including murder. The dead woman's daughter, Katherine Taylor, is convinced that the hypnotic suggestions of a year ago are what caused her father to kill her mother and that Knight is responsible. When she is found dead however, the case takes yet another turn. Meanwhile, Dalziel undergoes hypnotherapy to quit smoking.