One Tree Hill

At the hospital bed where Dan lies after a heart attack, Deb contemplates her role in the tragedy.

With the assistance of Peyton and Brooke, Lucas gives Nathan and Haley a wedding reception. Although Haley's parents, Jim and Lydia, support their daughter's marriage, Deb doesn't.

Although Nathan and Haley are already married, Tim insists on giving Nathan a post-wedding bachelor party, while Brooke hosts Haley's bachelorette party.

Brooke's smug new male neighbor rescues her after she is arrested for shoplifting. Nathan and Haley have their first post-wedding argument when he buys her a gift rather than a much-needed car.

Felix organizes a "dare night" to test the limits of his new classmates. While out playing the game, Lucas meets a mysterious girl, Anna.

After dare night resulted in new relationships, Lucas shares a romantic evening with Anna during a midnight meteor shower.

The opening of Karen's club, Tric, brings the people of Tree Hill together. Lucas and Felix engage in an altercation over Anna.

Brooke, Peyton, Haley and Anna have a slumber party at Haley's apartment where secrets and lies are revealed.

Although Lucas takes Anna as his date to the Tree Hill High formal, he's with Brooke at the end of the night.

Concerned about his brother's health, Nathan informs Karen that Lucas did not take the medical test for his heart. Meanwhile, Dan asks Keith to continue to work at the dealership as vice president, and Keith accepts.

Haley is surprised when her older sister Taylor comes to town -- but not as shocked as Nathan, who recognizes Taylor from a past tryst.

Nathan confesses his past relationship with Taylor to Haley, but Haley continues to keep her e-mails with Chris a secret.

After Lucas receives his medical test results, he moves in with Dan, straining his relationships with both Karen and Nathan.

Nathan experiences an emotional crisis and reverts to his former self as his marriage with Haley unravels.

During the creation of Tree Hill High's time capsule project, Anna and the members of the group confess their most intimate secrets to an anonymous video camera.

It's Keith and Jules' wedding day, and the event has caused a commotion in the town.

Keith has a violent confrontation with Dan after learning that Dan paid Jules to have an affair with Keith.

On his way home from seeing Haley on tour, Nathan spends time with Taylor, hoping for some fun and maybe more.

Nathan's Uncle Cooper visits Tree Hill to take Nathan and Lucas on an auto racing trip.

Lying in a coma after his race car accident, Nathan dreams of what life would have been like if Dan had stayed with Karen and Lucas instead of marrying Deb.

Nathan is discharged from the hospital and returns home to a pile of unpaid bills and an eviction notice.

Lucas and Brooke's relationship becomes more intimate when they travel to New York for an overnight stay with Haley. Nathan and Deb conspire to leave Dan, leading to an explosive conclusion when he discovers their plan.

Lucas and Brooke's relationship becomes more intimate when they travel to New York for an overnight stay with Haley.