During a game of ""Reality or Risk"" (a variation of the classic ""Truth or Dare"") Alex is asked to reveal who her best friend is. When Alex refuses to say whom she likes better, Sam and Clover start to get way competitive – vying for Alex's affection! Meanwhile, a British tabloid journalist has invented a truth serum gas that he uses to gather scandalous information from celebrities for his new tabloid, RagMag. When the spies try to stop him, Alex ends up getting gassed and reveals the existence of WOOHP. The journalist's plans suddenly change with this new information and use Alex to take over WOOHP.
After another funeral, tempers rise as the survivors' suspicions of each other grow, and an unlikely survivor vows revenge. The events that landed Sayid on Flight 815 play out as he engages Locke in a psychological game of cat and mouse to uncover the truth about the mishap that claimed Boone's life.
Checking out a crater in a cornfield, Clark and Lana discover a baby with no parents and take him back to the Kent farm. However, when the baby, Evan, ages from a newborn to a 7-year-old in less than a day, it becomes clear he is aging at a rapid rate and they turn to Lex for help. Meanwhile, Genevieve suspects Lex has the Chinese Kryptonian artifact and orders Lionel to either recover it...or risk putting Lex in danger of his life.
Jack's illness has caused him to hallucinate about a cure. Sydney must recreate the time when Jack was working for the CIA and hid the only man who might be able to help him now. For this, Sydney must play her own mother. Meanwhile, Sophia moves in with Sydney and Nadia.
Kelso considers what to do about his relationship with Angie, and comes to the conclusion that it's time to break up, but he's not sure how to do that. He seeks some advice from Jackie on the matter, but ultimately, the decision is taken out of his hands. Eric is shocked to discover that his college tuition fund is gone, and has to find another way to raise the money. His solution is one that Kitty, Red and Donna have differing opinions on.
Just as Joey and Sara become exclusive, Joey has to do a love scene with Carmen Electra for Deep Powder. Meanwhile, Alex struggles with the knowledge that Eric kissed another woman.
Seven years ago, a thirteen-year-old girl named Amber Bryce went missing, and suspicion fell on her boyfriend, then-seventeen-year-old Curtis Horne. When Daisy Thorpe, who had become obsessed with getting justice for Amber's death, also ends up missing, the team is called in to investigate. While Martin and Danny work from the office, Sam and Jack work in the field, starting their investigation with the local cleric, Amber's father, and trying to find out why Curtis Horne has stayed in town all these years. While Vivian is home having troubles with Reggie, Martin makes a decision about his relationship with Sam.
A nanny is found dead near a park while Messer is in trouble when he may have shot another police officer.
The shooting of a Panamanian jockey sends Fontana and Falco into the colorful world of horse racing, and they learn that the animal's owner used stolen funds for the purchase.
After a young woman is found raped and murdered near a nightclub with five hundred dollars stuffed into her mouth, Benson and Stabler follow the fingerprint trail on the money to Attorney Jason Whitaker, whose sole responsibility seems to be handling the trust for the Duvall family. Soon detectives are convinced that Gabriel Duvall is their rapist, but don't have quite enough evidence to put him away. ADA Novak is working on both the case and a terrified former victim when she is brutally attacked in her office late at night. The crossover continues on Law & Order: Trial by Jury S01:E11 Day (II).
Determined to get to the truth behind who drugged and assaulted her at a party the year before, Veronica questions her friends and many rivals about the chain of events that night at Shelley Pomroy's house. Meanwhile, when one of Veronica and Wallace's stunts affects her job at Kane Software, Alicia confronts Keith about his daughter's behavior. Later, in an attempt to get closer to his son, Aaron throws a birthday party for Logan that inadvertently surprises everyone.
Rory begins her internship at one of Logan's father's newspapers. Emily and Richard fawn over Rory's boyfriend, but Lorelai is not as impressed.
House and his team race to diagnose a 12-year-old's illness - an illness with a shocking origin - and House asks Cameron to come back to her job.
Monica and Vic rush to get their informants off the street after two C.I's are found brutally murdered. Meanwhile, as Dutch and Claudette investigate a brutal beating and robbery, a case from the past forces Dutch to take one in the line of duty. Plus, Vic suspects he's being set up when Shane comes to him after his situation with Antwon and Halpern spins out of control.
A young Marine is killed in Iraq, but he was investigated by police for a murder on a young girl in his hometown. While going through his personal belongings, they find the body of that girl. The local police believes that the corpsman murdered the girl, but Gibbs believes that he is innocent and he will try to prove it with a help of Faith Coleman (guest star Alicia Coppola).
Jay is ready to graduate from college, but a series of events ruin her appearance.
Nathan's Uncle Cooper comes into town to take Nathan and Lucas on a racing trip. On the track, Nathan and Lucas are challenged to a race by the beautiful Daytona and her smart aleck brother Jarret, but things go horribly wrong when Nathan loses control of his car and crashes into a wall. Meanwhile, Deb's addiction to pain pills intensifies and Dan exposes Andy's relationship with Karen to his class.
Mickey's got a plan and this one is like no other. They're going to steal the Crown Jewels. Will he be able to get the others to join him on such a dangerous mission?
ADA Kibre works with Detectives Stabler and Benson to prosecute a serial rapist Gabriel whose trail of victims through the years has been whitewashed by his wealthy and protective mother Eleanor. Kibre must also overcome witness intimidation – and even sees her crucial DNA evidence tossed out – but the slippery suspect's lawyer has yet another surprise under his sleeve. The crossover starts on Law & Order: Special Victims Unit S06E20 Night (I).