Peter learns that he and Claude may have been betrayed. Matt's reunited with the radioactive Ted Sprague and Hana Gitelman a woman with "wireless" mental abilities. Hiro makes a tough choice about his mission. Claire can no longer hold back her anger towards HRG.
Lily gets asked to play in an off-off-off-off-broadway play, and the gang shows up to support her. Ted and Robin get hung up on what each kept from their past relationships. Barney performs his own play to prove a point to Lily.
Michael and Sara request Henry Pope's help to retrieve the information that will topple The Company.Mahone pins down an escapee. Sucre discovers a new threat while hitchhiking to reunite with Maricruz. T-Bag brings the Hollander family to his home.
Matt is stuck on a Wednesday night with writer's block and also has to contend with a young lawyer who's investigating a sexual harassment claim while Harriet continues shooting her movie. In addition, Jordan and Danny enter into a contest to see who'd make the better parent.
The CSIs investigate when the parents of a baby sitter in an upscale neighborhood are murdered. As the team sorts through the neighbors' secrets and lies, they find an unexpected love triangle as a motive for murder. Meanwhile, a key piece of evidence found at the crime scene leads Horatio to expose a doctor with some dirty secrets of his own.
William and Monica's wedding bliss comes to a screeching halt when, while drunk, he expresses doubts about marrying her.
Charlie's young, hot girlfriend takes him to a new club. She invites Alan to meet one of her friends but the men are shocked to learn that they are considered as being "old".
Lauren is not at all thrilled in Heidi's decision to get back together with Spencer. The situation between best friends becomes even more heated and leaves their relationship hanging.
Eddie and Lund protect a 13 year old gang member from a rival gang, and Eddie reunites with the foster family who took care of him after his mother died.
Brian McAfee is a newly-divorced father of four children living a lonely, isolated life in Alaska. Brokenhearted and bewildered, Brian has shut himself off from the world and even his own children in many ways. He doesn't know any of his neighbors or his kids' teachers. He's uncomfortable doing girly things with his daughters, which has left a big gap in their relationship with him, especially for the oldest, Ellie (9). Brian's also baffled by his son's troubles with schoolwork, their house is a disaster, and all four kids have serious behavior problems because there's no discipline at home.
While Russell has a hot new date, Audrey bets Jeff that he can't score a phone number from a younger woman and gives him a night without his wedding ring to try.
Action continues on High Stakes Poker as Sammy Farha, Brian Townsend, Todd Brunson, Paul Wasicka, Barry Greenstein, Jennifer Harman, Erick Lindgren, and Eli Elezra continue to battle in this $300/$600 No-Limit Hold'em cash game.
George's curiosity about bones leads him to climb the dinosaur skeleton at the museum but he ends up falling off and breaking his leg. George must wear a cast for a few weeks and stay home. Hundley stays with him as his monkey sitter. George begins in a wheelchair and does not know how to use it, but Hundley teaches him how to navigate around the furniture in his apartment. Soon, George can walk on crutches and Hundley helps him out in the same way. Later, once George can walk on his cast, he goes to places like the park with Hundley.
The team searches for missing water plant supervisor Jason Turner, and learn that he had become the target of a lot of anger after recent layoffs at the plant. Carlos comes to the office looking for Elena.
Vorenus receives orders to plunge Rome into a bloodbath the likes that have not been seen since the dictatorship of Sulla. Octavia reveals her secret to Atia, and the armies of the Liberators and the Caesarians clash for the last time, with the fate of Republic in the balance.
After accidentally punching Drake in school, Eric becomes very popular. Meanwhile, Josh thinks that Mindy has a new boyfriend.
Chief Tyrol and his wife Cally become trapped in a malfunctioning airlock. Adama remembers his late wife Carolanne as he marks his wedding anniversary. His relationship with President Roslin continues to become more friendly and personal.
Eric sends Tim an ornamental hot dog; Ron Auster teaches children how to dance.
Tina's boss orders her to get the movie rights for Jenny's Lez Girls. Helena considers whether she should take up on Catherine's offer to pay off her gambling debt. Paige and Shane volunteer at Shay's school to teach the kids about tolerance. Meanwhile, Alice and Tasha take it slow, and Bette learns something about Jodi's past that puts kinks in their relationship.