Sam and Dean discover a doctor who, back in 1816, became obsessed with finding the secret of eternal life by taking people's vital organs. Meanwhile, Bobby finds Bela and Dean leaves Sam to confront her.
After Lex is attacked by a mysterious stranger, he and Clark both discover the last surviving member of the Veritas group who holds the secret to controlling the Traveler.
Michael is busy manning a job fair at Pam's alma mater, trying to find a summer intern. In an attempt to woo a major client, Jim, Andy, and Kevin go golfing.
The clinical trial continues to make progress. The anti-McSteamy club creates new initiatives but that isn't enough to stop one woman from spending time with him. Christina is affected by Burke's career developments.
Billie starts her own list, and she and Earl help out a grocery store bagger whom they share on their lists. However, Earl soon discovers that Billie doesn't completely understand the concept of karma and The List.
Inspired by Earl, Billie starts a list of her own and when Earl is getting annoyed by Billie's little habits, he decides to focus on working on the list instead. He picks a task that is on both of their lists, atones for the injury of a champion grocery-bagger and discovers a unique talent of his own. But Earl soon finds out that they have different ways of interpreting Karma.
Runaway Bay is a runaway renovation project. Buyers take one look at this house and put it in the too hard basket.
In the summer of 1985, a Delta 191 aircraft was diverted away from a thunderstorm, only to be struck by powerful winds and plummet to the ground. Flames engulfed the front of the plane and more than 130 people died in a tragic accident that would eventually expose, and eliminate, an invisible killer.
A legal aid strike ends in the death of a lawyer, and the investigation leads to a golf greenskeeper who proclaims his innocence, again. Then the case takes an even stranger twist when Rubirosa is pitted against Cutter because of the strike that started it all.
The team members try to identify a stalker before he can attack a woman who is being stalked in Silver Spring, Maryland. Meanwhile, Hotch and Rossi are called as consultants on a possible battered woman syndrome murder case in Boston.
As the search for the taxi cab killer continues riding a cab gets very deadly. The team must figure out how to keep New York City safe. Also Danny, Lindsey, and Flack investigate the murder of a man who made a half court shot during a game that both Danny and Flack were attending.
After hashing out their differences in Big Bear, one team returns to the mansion and announces to the other teams that they are a force to be reckoned with. Geeks become style gurus when they give head-to-toe makeovers to a group of nerdy girls for this week's challenge. The beauties roll up their sleeves and are tested on their plumbing skills.
While on an undercover mission, Ziva's life is put in grave danger when the serial killer she's been tracking becomes suspicious of her.
Although reluctantly, Sebastian accepts a seven-figure retainer to defend a crooked casino owner who allegedly murdered the head of operations at his casino.
A fantasy birthday celebration is the order of the day for the remaining aspiring chefs. The chefs cook for a sweet 16 party, but the mood in Hell's Kitchen is anything but sweet. One chef must face Ramsay's wrath when a diner sends back undercooked meat. And in a surprise twist, a new chef joins one of the teams at the episode's elimination ceremony.
When a pregnant woman's body is discovered in a burned-out brownstone, the investigation turns to a family of coffee importers.
A man is murdered when someone drops a piece of slate off a bridge. The team tracks the slate to one of their own and Alexx's son becomes a suspect. Then to make matters worse Alexx finds him in a warehouse holding a bloody knife over his friend who happened to be the other suspect.
Brennan's father Max Keenan is on trial for the alleged murder of FBI Deputy Director Kirby. Everyone on the team, except for Brennan, is called as a witness for the prosecution during the trial. Brennan on the other hand is the forensics advisor for the defense, and she must rely on both her dedication to her family and her skill as an anthropologist to help free her father.