J.D. feels that the same things happen over and over again at the hospital. Dr. Cox returns to work, but Elliot believes that he has lost his usual confidence. Elliot calls Dr. Cox on his behavior. Carla gets fed up with Turk, because he still can do a lot of stuff, but she can't since she is now pregnant.
After discovering the true perpetrator of the bus crash, Veronica is desperate to warn others before it's too late. However, she inadvertently puts herself and her loved ones at risk in the process. Meanwhile, Keith tracks down Woody in hiding, Wallace leaves for Paris to be with Jackie, and Weevil again runs into trouble with the law.
Rory throws a graduation party for Logan, but their time together is bittersweet. Lorelai delivers an ultimatum to Luke.
After Bob gets his cover blown in Africa, he tells Jonas to cancel a visit a dignitary is taking to the area because of the danger. However, the official refuses and something shocking is quickly learned about why he really wants to go there. Meanwhile, Kim has an encounter while at the radio station and Molly gets offered a real estate opportunity.
Keith Soto returns to the base for a reunion and it's quickly discovered by Jonas and Col. Tom Ryan that he is a newspaper reporter who is writing an article that will expose the Unit. Jonas decides there is only one way to get him to not print the story. Meanwhile, with some help from Tiffy and Kim, Molly tracks down the woman who scammed $40,000 of the women's investment fund.
A young mother has a seizure while bathing her newborn son and nearly drowns him. House and the team have two cases at one time as they try to save the infant and determine the cause of the mother's seizures.
While working on an assignment, Gibbs is seriously injured in an explosion, and taken to a hospital, where he recalls his painful past, which he has always hidden from others. The rest of the team must proceed with the investigation and put their feelings towards Gibbs's injury aside. Tony is left in charge, which may cause a bit of trouble.
Denny once again goes head-to-head with his non-son, Donny, when he shows up in his new role as a Lawyers Without Borders representative. But Alan finds it difficult to support Denny's defense when Denny makes light of the case. Meanwhile, Marlene Stanger, known as "The Squid," is hired at the firm, and immediately attracts Alan and repels Denise.
When an eight-year-old propositions a male classmate, Stabler and Tutuola are called in to investigate the case and soon learn that Jake Winnock's father spent seven years in prison for molesting his older brother, Teddy. D.N.A. tests clear Gregory Hensal of abusive his son, but implicate Jake's older brother, whom detectives soon learn has been running his own personal Internet pornography site. T.A.R.U. tech Ruben Morales joins the detectives in their search for Teddy after he goes missing, but his own guilt about his nephew's molestation after being raped by an online predator he met using the computer Morales had given him colors his judgment when dealing with one of the suspect's.
Ephram rescues Reid from attempted suicide as Reid suffers depression from finding out that he has been kicked out of Med School. Nina confesses to Andy that she still shares feelings for him. A necklace is passed between Harold and Bright as each try to apologize to Rose and Hannah.
The team is sent to investigate the death of a local celebrity, who is found murdered in her bathtub. The list of suspects includes her musician boyfriend, her assistant and her rival. The search for a young abducted girl is triggered, and Horatio tells Delko of Marisol and his plans.
Part 1 of two. Arnaz rekindles his relationship with D-Mack's sister, Michelle (Brandy), when she returns from Paris unexpectedly; Breanna learns some surprising information about Calvin; Sara dates a doctor; an agent convinces Cash that he should become a model.
A series of unfortunate events prevents Joan from being there for Toni (again) as the custody hearing takes a surprising turn.
When Maya moves into her new place, Joan ditches the housewarming for an A-list party. Toni and Todd try to come to a settlement.
Allison is busy investigating the death of a local doctor when a man claiming to be "Death" begins appearing in her visions, causing her to worry that maybe her time on this world is nearly over.
Joey's feelings for Alex are driving him crazy. Dean throws Alex a birthday party and is going to propose to her. Gina and Jimmy are getting tattoos to show their love for each other.
Doug crashes Carrie's weekend company retreat, not realizing she's blown it off for a relaxing day with her girlfriends. Meanwhile, Danny and Spence pose as staff to sneak into a Huey Lewis concert.
Doug befriends a driver from one of IPS' competitors, but eventually discovers it's just a ruse to make him the butt of a joke. Meanwhile, Carrie becomes a mentor for a troubled teen, but isn't the best of influences.
And then there were eight. The candidates dive into a hair-raising challenge in which they must oversee the grand openings of two hair salons.
The vicious criminal Chopper Hadley, who has been back in the country for a week, is searched for by the team. However, Halford is viciously intimidated and the squad start to realise the full danger of their target. Desperate measures are used and Brian is sent undercover to get Hadley once and for all.