While Sarah, John and Cameron track another name from their list, they accidentally cross paths with T-1001. Meanwhile, a woman who Derek once knew in the past surprises him by appearing in the present.
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.
Don meets up with an old friend; Pete's personal life presents problems; Joan brings her boyfriend to the office.
Bree's new found success causes the rest of the women on Wisteria Lane to feel envious. Lynette longs to return to her days as an ad-executive, and finds an outlet as Bree's marketing manager. Mike feels that he is not a big enough presence in his son's life after M.J. draws a family portrait and leaves him out. Meanwhile, Gaby comes up with a way to have more sex with Carlos.
Lt. Colonel John Sheppard's team is invited by the Coalition of Planets in order to form an alliance. However, the team is misled and is faced to stand trial, for their alleged crimes against the Pegasus galaxy. Their best chance of freedom, is the experiences of Richard Woolsey.
Bob and Mac both find themselves in trouble when they each take assignments undercover. Bob as a chemist who hides cocaine by converting it to paint and Mac as a fighter trying to bust an illegal betting ring.
Ramon's career may be in jeopardy due to his obsession with Oscar's killer. Meanwhile, Dexter does a great job in keeping Ramon off balance by manipulation. Deb refuses to "be a rat" after Internal Affairs presses her to come up with more dirt on Quinn. Also, Rita and Dexter decide it's time to tell the children about her "condition," and Angel's quest for companionship nearly gets him in deep water.
Hank proposes to Karen right before a dinner party, to which Mia, Charlie, Marcy, Lew Ashby, Sonja and Julian are invited. Drugs and special circumstances turn the evening in an unexpected direction.
An irreverent take on the Prince and the Pauper. Bart enthusiastically trades lives with a wealthy lookalike after landing himself in trouble for triggering a rampage of vacuum cleaners, but finds the lavish lifestyle too much when he becomes the target of all his new friends' pranks.
Sookie's painful childhood revelation spurs Bill into action; Tara agrees to pay for an exorcism for Lettie Mae; Jason travels to Fangtasia in search of V juice.
Nora gets ready for a new charity venture by getting rid of all of William’s belongings. Meanwhile, Robert begins to interview possible replacements for Kitty; Holly looks into the location of William’s son; and a time capsule brings two of the siblings closer together.