While Horatio and the team investigate a murder at a trendy store, Horatio finds that Julia's instabilities have turned her into a ticking time bomb.
Lincoln works to retrieve the final card, which is being held by the General. Michael and Self are forced to work with Gretchen. Meanwhile, Roland continues to be berated for losing the transcribing device in Las Vegas.
Nathan and Haley must team up to help Jamie deal with a school bully. Meanwhile, Lucas and Peyton continue to adjust to life as a live-in couple. Elsewhere, Mouth tries to get his old job back.
Chuck goes undercover at Sarah's 10-year High School reunion, where they meet the girl that tortured Sarah back in the old days.
Ted and Stella move up their wedding date, but the wedding may not go off as planned after Ted breaks the "No Exes Rule" and invites Robin to come in from Japan for the wedding.
Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
Vanessa uses the scandalous picture of Catherine and Marcus to blackmail Blair into being a nicer person, so Blair seeks revenge by enticing Chuck to seduce Vanessa. Lily and Bart throw an extravagant housewarming party and expect their children to make them proud in front of the attending press, but a rebellious Serena isn't ready to play by their rules. Meanwhile, Dan and Jenny discover a big secret that Nate has been keeping from his friends.
Alan and Shirley prepare for a fight with the military on behalf of a man whose brother died under suspicious circumstances. Meanwhile, Jerry helps his sister in her search for the identity of the father of her son, who was conceived through an anonymous donor.
Charlie tries to help Jake's former teacher, who became a stripper after dating him, but things go from bad to worse when she has a religious conversion.
Villains Knox and Daphne are on a quest to recruit Hiro and others to the Pinehearst fold. Angela and the Company are paralyzed from recent events. Peter goes to Pinehearst searching for answers but is stunned to learn who the founder is. Claire and Sandra go on a mission to save Meredith from the clutches of Doyle, a villain with abilities to control people mentally and physically. Nathan and Tracy try to trace their origins with Mohinder's help.
The new Sam decides to take a trip to Africa in hopes of providing some help to people who desperately need it, but then chickens out when she finds out what it's going to take to get there.
A 43-year-old man takes a nap at his parents house, and is later found dead in bed. The man had several conditions that put his health at risk, including morbidly obesity, high blood pressure, and sleep apnea. However, Dr. G is hesitant to jump to conclusions when her autopsy findings dont quite add up, so she opts to wait for the toxicology results before closing the case. A 53-year-old woman is found dead on her couch. The woman was obese and a smoker, her son notes that she had suffered an episode of intense eye pain the day before, and Dr. G finds signs of trauma on the womans lower body. With many potential suspects, only Dr. Gs autopsy will narrow down the cause of death.
Davis’ decision to take on Brent and Lacey as the sponsors for his soccer team lands him in hot water with the players’ parents. Meanwhile, Karen is spooked out of the police cruiser driver’s seat and enlists Hank’s help getting around town. And when an old tape of Wanda doing television projects for a college broadcast course winds up in Oscar and Emma’s hands, it’s all fun and games until Oscar and Emma find out the last laugh is on them.
After inviting too many co-workers to the wedding, Sam tells a risky lie that takes on a life of its own...
How Europe took over as the world's mathematical powerhouse by the 17th century.
Three teenagers from the Pai Zhug Kung Fu Academy are chosen to fight the forces of an opposing academy and all other forces of evil.
Tim get a new nickname after taking the rap for the misdeeds of his boss's dog.
A momentary lapse at a family baptism turns into a major embarrassment for Tim, thanks again to the Priest.