Episode list

A dangerous day at Tree Hill High gives Nathan and Lucas a common goal, as they put their lives on the line to save their friends when a distraught student comes to school with a gun and holds Haley hostage.

As Whitey's last game approaches, the residents of Tree Hill feel the pressure of a looming State Championship. Peyton reveals to Lucas that she has feelings for him. Haley learns the sex of her baby. Nathan and Lucas clash over personal and team goals. Karen shows Deb tough love, while Dan tries to strike a bargain with Daunte.

Nathan's practically safe return causes general joy. The only downside is Dan's condition, probably terminal, but the whole family is in a forgiving mood while reminiscing, only Lucas refuses to come. Julian is welcomed as a hero and hears Brooke survived Xavier's attack, then stands by her as a paternal visit proves too good to be truly non-business. Clay goes to Sara's parents, who have raised Logan, and gets them to agree to let his son be invited home with him and Quinn.

In the final chapter of One Tree Hill, the tenth anniversary of Tric brings old faces and new possibilities for the Tree Hill family. To celebrate the 10th anniversary they host a concert at Tric that includes Gavin Degraw. Julian buys Brooke's childhood home for them to live in. Nathan and Haley celebrate their 10th wedding anniversary.

Dan must face the harsh consequences of his decision to murder Keith as Karen and Haley's pregnancies complicate the lives of Nathan and the graduating seniors of Tree Hill High. Lucas wrestles with his post-high school options, and Peyton and Brooke prepare to spend the summer in Los Angeles together.

Nathan and Haley's wedding is a time of great joy. And great sadness. Peyton and Brooke fall out, Dan learns the truth about the fire, and Rachel gets publicly drunk....and publicly bitter.

A class assignment reveals the deepest secrets and desires of Lucas and the students at Tree Hill High. Worried about college prospects, Skills turns to Haley, while Nathan wrestles with Deb's suicide attempt. Chase learns that Brooke cheated on her calculus exam, while nudity and drugs run rampant in the halls of the school.

Lucas returns from Las Vegas and learns of the tragic death of Quentin Fields, as Nathan and Haley struggle to find a way to help Jamie understand the death of Quentin who was a close friend of theirs. Lucas, Skills, Nathan, Haley, and Peyton go to visit Quentin's mom and give their sympathies. Jamie meets Quentin's brother, Andre.

Nathan gets some news about his future on the Chiefs. Peyton gives birth to hers and Lucas' baby daughter, Sawyer, and receive a surprise visit from Karen. Dan is on death's door, while Brooke and Victoria prepare to re-launch Clothes Over Bros.

Lindsay's big day, the wedding to Lucas, has finally arrived. The old gang reunites, remembering their own loves and/or marriages, even Karen and Andy from New Zealand. Haley still isn't ready to let Nathan back. At the altar Lindsay finally realizes the Comet in Lucas' book refers to Peyton's car and their first love, and runs out. Crazy Carrie kidnaps Jamie, pretending she was rehired as his nanny. Because Haley saw Dan and refused him entry, Nathan sends the police look for his dad. In fact Dan followed Carrie and finds his grandson.