The gang thinks that Barney must have a secret girlfriend after noticing his bizarre behavior.
A paintball game leads to a fight between Sheldon and Penny, and romance for Leslie and Wolowitz.
The contestants make over a group of female extreme fighters into their drag daughters. Xena herself, Lucy Lawless, makes a guest appearance to judge the girls' combat prowess.
Allison is asked to help find a missing daughter and her visions seem to incriminate her father, but Allison believes this is wrong after a chat with the woman's mother. Meanwhile, Joe is suffering from sleep deprivation, while Scanlon and Lynn's relationship is severely tested.
What Jessi and Kyle find in Cassidy's safe sends them searching for the truth about Sarah Emerson, but Jessi's unrelenting method may endanger her life. At home, Declan finally puts his foot down, and Josh already misses Andy.
When pirates take over a luxury yacht, Delko's future as a CSI is threatened just as his relationship with Calleigh moves to the next level.
The squad tracks down a serial killer who has been mutilating women; Ham is temporarily partnered with Butch during Bobby's absence; Earl tries to persuade Grace to help Leon.
After receiving a tip from "Rebel", Matt and Peter race to Building 26 to rescue Daphne and recover files that will expose the government's plans for those with abilities. Claire finds help from an unlikely source in smuggling Alex out of the city. As Sylar and Luke continue their road trip, Sylar begins to have memories of his father that lead him to the truth about his mother. Meanwhile, "The Hunter" puts his own agenda into action with an explosive surprise for one of our heroes.
Charlie battles father and son villains with the power to stop time. Meanwhile, his poor school grades and academic probation threaten his ability to play basketball.
Emma keeps a watchful eye on the citizens of Dog River to ensure the town reigns supreme over Wullerton ('spit') in "Turn Off Your TV Week". Lacey and Oscar find a profitable way to break the rules and Karen and Davis hit the radio airwaves to help everyone cope. Brent finds a creative way to get through a week of no TV with the help of Hank and Wanda.
Essex's high-speed police interception unit chases the drivers of a stolen BMW X5, and the Stanway team gives two unsuspecting car thieves an early morning wake-up call. Elsewhere, officers discover a vehicle that has been turned into a four-wheeled petrol bomb, and a road-tax evader encounters trouble with the law.
15 year old Amy ends up pregnant after one night at band camp, throwing her whole life upside down. It doesn't help that she's now going to school with that guy.
When a teenager is murdered, the alleged killer's defence barrister has an audacious plan up her sleeve.
Hannah is on a talk show and says she doesn't like carrots and books and her fans have no choice but to do likewise.
When Langley Falls bans trans fats, Stan and Steve become smugglers. Meanwhile, Klaus gets word that he has received an inheritance but can't collect it because the CIA has turned him into a fish.
Patterson's wife is struck with illness, and gives him permission to seek a new wife.
Lou resurrects the Hudson Derby, stirring up an age-old grudge match between Jack and Tim.
Nicki's problems escalate at home and on the job; Alby's wife Glory reacts to her reduced stature at Juniper Creek by showing a secret document to Bill; Joey's plans to make Kathy his second wife could be derailed by Roman and Hollis Greene.