It's Camden chaos all around when Matt (guest-star Barry Watson), who is having problems in his marriage to Sarah (guest-star Sarah Danielle Madison), returns to Glenoak for a visit and runs into his ex-girlfriend Heather (guest-star Andrea Ferrell) on his flight to Glen Oak. Simon (guest-star David Gallagher) unexpectedly announces he's coming home for the summer.
Also, Lucy sets out to discover why Roxanne is suddenly too busy to hang out with her as she's convinced that Roxanne is secretly trying to become a detective behind Kevin's back. Ruthie keeps a secret about a fellow student from her parents. Lastly, Martin learns that his baseball teammates think he's having sex with Cecilia

With the Magog World-Ship at hand, Dylan must defend Arkology as one of the Paradine, beings said to have witnessed the creation of the universe. Beka makes her decision to leave the battle while she still can. Harper and Rommie attempt to get Arkology slip-capable again before the World-Ship destroys it.

This was an all-female episode.

Ephram is on cloud nine after being accepted into Julliard's summer program, but his emotions are sent into a tailspin when Amy shares her feelings for him and asks that he stay in Everwood for the summer. Meanwhile, Dr. Abbott's family thinks he's gone off the deep end when he decides to open a bagel shop in response to losing his malpractice insurance, and Andy learns a shocking revelation about his family.

Charlie attempts to cure Alan of his recent bout of sleepwalking; Jake sees his therapist.

With business booming at OCC, Senior splurges for an expansion to the cramped garage ... and a custom Harley for son Paulie. Back in the shop, the crew hustles to get the Dixie Bike ready for its Daytona debut. But with the clock ticking and the realization that the rear fender is hopelessly bent, the guys are going to have to come up with a creative solution to get this grass-kicking hog to the show on time.

A security guard is found dead after shots ring out at a rap star's concert and the CSIs must investigate. Rap star 10-Large won't talk to the police regarding the murder or why someone would try to kill him. But when evidence suggests that perhaps 10-Large's bodyguard was the intended target, the CSIs must look into the dangerous world of personal security. Meanwhile, Alexx gets the shock of her life when a supposed cadaver from a recent car accident wakes up in her morgue, suffering only from hypothermia.

Nessa tries to help a gambler who is demanding his favorite dealer, only to realize that he has a bomb strapped to his chest. Ed casually joins the table, posing as a high roller, and tries to signal Danny that the man has a bomb. Mary and Sam organize a private pool concert by Everlast. The only attendees will be the privileged teenagers of the casino's high rollers. Delinda attempts to organize a successful live kitchen demonstration on the casino floor.

Guest: Sen. John McCain (R-AZ; Author, Why Courage Matters)

Segments: GIANT Mess O' Potamia (Rumsfeld Testifies on Abu Ghraib Scandal)

Bob Wiltfong (Senior Citizen Sues City After His Coat Gets Damaged by "I Voted Today" Sticker)

After he tries to get a transplant patient to the top of the list Ed is suspended. Sammi is admitted to AAU with a bleeding ulcer and Rosie goes to see him after Mubbs proposes to her. Cherise Patterson's pregnancy becomes complicated when she shows symptoms related to cancer and she goes into labour during Mubbs' investigations.