Harry loses his cool with 3 swimmers that he's forced to rescue just seconds after warning them not to swim in a dangerous area. However, calling them "imbeciles" and "idiots" puts him in hot water.
When Sawyer escapes from the temple, Kate and Jin are sent to bring him back. Meanwhile, the Others determine Sayid is infected and attempt to poison him. In the flash sideways, Kate, still on the run, takes Claire to a hospital when she goes into labor.
Mike visits a bone black plant in Michigan and then talks about his five dirtiest jobs.
Mimi gets a toy boy, Billy the Jockey football team's star striker, but her happiness is short-lived when she discovers her new beau is the not the man she thought he was. So when Billy tries to blackmail Mimi into continuing to see him, she decides to teach him a Maguire life lesson he will never forget. Shane and Kelly encourage Paddy to get back into the dating game; only to have their proposal rejected. Unperturbed, Shane rallies his brothers together and arranges a night out for Paddy. At the club Paddy's embarrassing 'Saturday Night Fever' dance routine cause his sons to abandon him. Emasculated, he returns home where he finds his own opportunity to make a proposal. Elsewhere, Frank is temporarily blinded by bootleg vodka. Rejecting doctor's orders to detox, the family take advantage of his blindness and set about turning his vices into virtues. Joe settles in as the new manager of the shop and in an attempt to make more money on the side, makes a deal with Shane.
Alicia defends a man accused of killing his child's babysitter. Meanwhile, Peter's appeal seems to be going well, and Alicia prepares for the idea of him returning to her life.
While opening a safety deposit box at a local bank, NCIS Special Agent Kensi Blye is shot after three armed assailants enter and hold everyone in the building hostage.
After a streak of bad luck, the team holds a "Lock-In Party" at the Goat House to build team camaraderie at which Alex and Thad divide the rest of the players into two groups and compete in a drug-fueled Team Building Olympics.
In a post apocalyptic world, holiday treasures disappear: Fireworks factories erupt, Christmas tree farms grow out of control; real reindeer must adapt or die. Vacation icons fall, from high-end resorts and cruise ships, to roller coaster thrill ride. A Holiday Hell ensues.
When a Marine is found dead, Gibbs, Fornell and the team hit the open road to bust an illegal trucking operation.
To avoid an international conflict, Peter and Neal have to find a thief who is stealing pieces to a valuable collection.
CPD finds themselves on familiar ground when they are called in by the Frankfort Fire Department to investigate strange occurrences in the firehouse. Everyone falls ill during the investigation and Ron is left to consider if it's being caused by paranormal activity as Moriah makes contact with two spirits, one of which is intent on reaching out to a loved one.
Heather is released from jail due to lack of evidence. Corrinda goes to have an abortion, but learns that this pregnancy is her last egg, which causes her to reconsider. Dusty and Bowman's Corpse's relationship starts to become more intimate. Ricky has Marnie go to the trial with a spy camera on so he can watch, noticing that Marilyn is absent, who is at her office drinking, but an encounter with Death before the trial starts causes the camera to lose its signal. The trial starts with each side's opening statements, Big City's being all excitement and no substance, while Murray is late and completely unprepared, so Crim fires him and decides to represent himself, only to announce that he remembers a drug induced "vision" where his spirit bear told him to kill the mayor. Murray manages to get this statement stricken from the record, and Crim re-hires him and makes them blood brothers. Heather tries to make herself Corrinda's permanent replacement when she goes on maternity leave. Later, Heather is killed in the courtroom, with Death and Rampop being the only witnesses.
Tom and Greg are enslaved alongside dozens of others in Mr Smithson's coal mine. Elsewhere, the Family are desperately tracking Billy, their only lead, across the country. At a roadside motel Billy stops to meet his girlfriend Sally and when the Family confront him, Billy claims ignorance and exits. Meanwhile in the mine, Greg formulates an escape plan, convincing Smithson that he's a geologist and has discovered a gas leak. However the Family are converging on Smithson's as well with their own rescue plans, leading to a dangerous game of cat and mouse...
Patty is forced to race against the clock to prevent a key witness in the Tobin case from fleeing the country. Meanwhile, Ellen learns a dark and shocking family secret.
When Lux gets suspended from school, Cate does her best to convince Principal Dugan to give Lux a second chance, but, unfortunately, her efforts may have made the situation considerably worse for Lux. Meanwhile, Baze is insulted when he finds out that Cate and Ryan are hosting a radio station event at the bar across the street.
Despite averting the assassination attempt on foreign peacekeeping leader Omar Hassan, Jack Bauer's day intensifies when he is forced to go further undercover to secure the unsecured enriched nuclear materials. As international delegates reconvene at the United Nations, President Taylor's goodwill comes into question and CTU races against time to assist with the mission.
Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.
When Lily and Marshall forget to fix up Ted on a blind date for Valentine's Day, they use one of Barney's many discarded girls to see if they may become Ted's future wife. Meanwhile, Robin's obnoxious colleague invites her to a party at his apartment
Brooke and Julian try to find a balance between their personal lives and work as the movie shoot begins. Nathan and Haley receive a surprise visit, and Clay supports Quinn as she faces some unexpected news., Alex sets her sights on Alexander, and Millicent finds herself struggling with temptation.