Rory and Dean find it increasingly difficult to be alone together due to their distant living arrangement and the fact that he is sharing a car with his estranged wife. Impulsively, Rory asks Dean if he only left Lynsey because she found Rory's letter, and is not completely satisfied with his response. Lorelai and Sookie run Jackson's campaign when he decides to run against Taylor for Town Selectman. Lane tells her band-mate Zach that she has feelings for him.

A marine helicopter is discovered in the middle of a crop circle in a rural area and the pilots are missing. Soon, NCIS discovers that only one of the pilots was on the flight, that there is a decade long feud going on in town, and that the missing pilot is out for revenge.

Brent, wondering why he's never seen Oscar and Emma's wedding pictures, is shocked to learn that they never got married. Davis finds he has a flair for wedding planning. Brent and Hank argue over a Darryl Sittler hockey card; Lacey tries to help Oscar with a problem that only she thinks he has.

When Dan resurfaces, J.D. is shocked to learn that his father has passed away. The reactions from his co-workers help J.D. a little, but the one person who he wanted to be there for him, Dr. Cox, is too busy with J.D.'s patients.

Meanwhile, Dan sits drunk in the bath tub the whole day and Turk finds out he has Type II Diabetes.

Jim offers to give Andy an old barbecue grill, then decides Andy should pay for it.

Examine the complex case of Typhoid Mary, a cook who was quarantined for life against her will in the early 1900s.

Brooke's new neighbor quickly makes his presence felt among the Tree Hill gang and even comes to Brooke's rescue when she is caught shoplifting. Nathan and Haley have their first post-wedding argument when he buys her an expensive gift rather than a much-needed car. Lucas' attempt to help Dan with rehab ends in disaster when Dan reverts to his old persona. Meanwhile, Peyton tries to organize an all-ages club and is tempted to try cocaine to seal the deal.

Even though it brings up her own painful and personal memories for her, Veronica agrees, with Wallace's help, to look for the father of her classmate Justin, who has been missing for 10 years. Veronica is also having a hard time dealing with conflicting feelings she is having concerning past and present loves. Keith is called to the school by the guidance counselor who is concerned about how Veronica is handling all the changes that she has been forced to deal with lately. One of the issues that Veronica and Duncan have in common is dealing with is the upcoming anniversary of Lilly's death.

After having paint dumped on him, a humiliated Rick returns to Degrassi, intent on paying back his tormentors, but when Jay and Spinner put the blame on someone else, Degrassi will be changed forever. Caitlin returns from Africa, but when she finds out Joey is selling his house, Caitlin decides to help.

The detectives investigate the alleged rape of a sixteen-year-old television star, which leads to conflict about whether or not an obscene shock jock should be held responsible for setting the events in motion.

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