An ailing man suffers from blackouts and sleepwalks, leading the team to wonder if his sleepwalking is a symptom, or how the man is becoming exposed to something else. When the man's daughter grows ill as well, the team must provide a diagnosis before both die. Meanwhile, Cuddy adopts a newborn but when the birth mother displays a rash, she has to make a decision between putting the mother or daughter at risk.
When a girl is found covered in blood and holding the murder weapon that killed her best friend, she becomes an obvious suspect, though she can't remember anything. But Jane, believing she's innocent, engineers a risky maneuver in which she must relive the terrifying events in order to spark her memory.
The team must shift their attention from a case they are working on and hand it over to Martin, after a child is reported to have been kidnapped at a mall.
Efficiency expert Emmett Milbarge pays the Buy More a visit to inspect the branch, while a global terrorist looks for Jeff. Chuck needs to socialize with Jeff to find out about his connection to the terrorist. Finally, it all comes down to video games and the prevention of World War III.
Jenny has a new young model friend, named Agnes, who encourages Jenny to explore her wild side, and also to confront Eleanor Waldorf who is planning to steal Jenny's designs in order to pass them off as her own. Meanwhile, Serena and Dan attend Rufus' latest art opening as friends, but then Serena meets an artist, named Aaron Rose, and the evening gets a little uncomfortable for Dan. Elsewhere, Blair attempts to seduce Chuck, but he proves to be tougher than she ever imagined. Also, Jenny begins to have a mutual feelings with Nate as he's staying with her, Dan, and Rufus while searching for a place to live.
Shirley defends the notorious Catherine Piper after she accidentally blows up her doctor. Meanwhile, Alan and Denny take a break from the office, but they are out of their element at a dude ranch in Utah.
Harry's Roadhouse (Santa Fe, N.M.) • Dor-Stop Restaurant (Pittsburgh, Pa.) • Surrey's Cafe (New Orleans, La.) Guy Fieri checks out breakfast from east to southwest: In New Orleans, a juice bar makin' bagels from scratch; a New Mexico roadhouse mixin' Philly food with Southwestern favorites; and in Pittsburgh, a family joint scratch-making pancakes with everything from peanut butter to pumpkin.
Lucas' novel receives interest from a suprising person, as does Mouth as he meets his new intern. Jamie begins to develop a crush on Sam and her rebellious ways, while someone becomes enamored with Brooke. Meanwhile, Haley and Nathan discuss his return to baskeball as his comeback begins to look more like a reality.
Harry vows revenge by taking down the head of Russia's intelligence service in Britain with the help of Lucas North. Lucas's loyalties, however, are secretly no longer with MI5 and he exploits Harry's trust to help a Russian submarine destroy Britain's communications system, causing financial and social chaos.
The team steps in when a British soldier is kidnapped by Al-Qaeda. Meanwhile, an old protégé of Harry's returns to the fold after eight years in a Russian prison - but whose side is he really on?
Desperate to regain her memory, Sam opts to join a clinical trial and starts taking pills for her memory. Sam's memories start coming back, but she doesn't like what she learns about her former self. Elsewhere, someone confuses Dena and Andrea as being a gay couple, which frustrates Andrea and sends her on the hunt to find someone hotter than Dena.
Trapped, Nathan and Tracy must fight to save their lives against Suresh, who has changed dramatically. Elle returns with shocking news for Claire and her family. Meanwhile, Angela tries to convince Sylar to save Peter; Daphne is ordered to kill Matt or she will be killed herself; and Hiro questions Usutu's advice.
MUFON - the Mutual UFO Network - investigate a UFO sighting, and possible alien abduction, using the tools of science, psychology and law enforcement.
Brent thinks the self-serve option at Corner Gas will make his life easier, until he discovers his customers are enjoying it a little too much. On the other hand, Lacey’s Ruby buffet has her customers working overtime. Wanda’s quest to reclaim her title as Rumour Queen proves disastrous for Karen and Emma, while Hank’s old laptop becomes a hot potato when he tries to sell it to either Oscar or Davis.
Marcus du Sautoy examines unsolved problems that confronted 20th-century mathematicians.
David and Geneva bought their fixer-upper in search of more room for their growing family. But four years later, the renovations are still not completed and Geneva is fed up. David, on the other hand, thinks all the house needs is a little more work and it could be the perfect home for their now family of four. But one of the main problems with the house starts at the front door... if you can even find it. The home's address is on one street, but their "front entrance" is on another street. On top of that, much of the home is cold, and there's a lack of privacy--the kids' room is attached to the master bedroom. Fed up with the dysfunctional layout that lacks a proper front entrance, David and Geneva call upon experts Jillian and Todd for some much needed solutions. Jillian and her design team will transform their house into an open concept oasis, while Todd will convince the family it's time for a new home. In the end, will they love it or list it?
Audrina wants to make things work with Corey, but finds herself torn when Justin drops by Epic. Meanwhile, Stephanie starts having doubts about her new boyfriend when he fails to defend her in front of Brody.
Clyde threatens Sarah but they manage to talk him out of it, which leads Sarah Jane to believe that Trueman's control on people can be repressed by persuading them to do something that they do not normally want to do. Meanwhile, using in his broadcast to the world, Martin Trueman takes over each star sign one by one, starting with Gemini - including Rani's mother. The world is in confusion as people are accepting the 'Ancient Lights'.
After scoring a first class seat next to Jamie-Lynn Sigler, Turtle makes a mile-high claim the guys just don't buy. While Ari is distracted, Josh Weinstein courts Vince.
After enrolling in Wiz Tech, Alex realizes her new crush, Ronald, has kidnapped her former crush, Dean. Max and Professor Crumbs join forces to become a dynamic duo, and Justin and Alex must team up to save Wiz Tech from falling into the hands of Ronald and his evil father.