In season nine, how will Brooke and Julian juggle parenthood and their very young careers? With Nathan traveling more as an agent, how will Haley's life change with a second child, an increasingly independent Jamie, and a busy cafe to run? Is a wedding in store for Quinn and Clay? Or Mouth and Millicent? And what s to become of Alex and Chase and their burgeoning romance? Following a fictional four year jump in time, One Tree Hill has now spent four seasons exploring the experiences of twenty-somethings.

EP. # 9.01
As Brooke and Julian begin to adjust to life with their new children, Haley and Nathan find themselves dealing with similar issues. Although they don't know it yet, faces from the past threaten to interrupt plans for all their futures. Meanwhile, a mysterious problem arises for Clay and Quinn. GO
 

EP. # 9.02
Brooke discusses a new business venture with her father as Julian stresses about his own investment. Quinn convinces Clay to get help, and Millie struggles to be honest with Mouth. Meanwhile, Chris Keller makes Alex an offer she may not be able to refuse and Nathan volunteers to scout in Europe, leaving Dan with Haley and Jamie. GO
 

EP. # 9.03
Dan helps a struggling Haley at Karen's Cafe. Meanwhile, Quinn discovers that Clay is hiding something from her, and Chase tries to mend a broken heart. Brooke is let down by her lunch plans with her dad, and Julian makes a life-changing mistake. GO
 

EP. # 9.04
While Julian struggles with his guilt, Brooke helps Haley square off against a new rival cafe and its difficult owner. Meanwhile, Chase meets a new girl with a complicated secret, and Quinn goes to great lengths to help Clay understand that he's worse off than he thought. GO

EP. # 9.05
Quinn tries to keep Jamie distracted while Haley desperately searches for Nathan. Clay finally gets starts to get some answers about his condition. Meanwhile, Julian attempts to return to a normal life, while Brooke tries to give Tara a chance. GO
 

EP. # 9.06
Dan enlists Julian to help in his search for Nathan. Mouth fills Clay in about Nathan, as Haley explains Nathan's disappearance to Jamie. Brooke gets an idea of how to bring patrons to an empty Karen's Cafe, and Chris Keller confronts Chase about Tara. GO

EP. # 9.07
Haley turns to Lucas for help in the search for Nathan, who makes an attempt to escape his captors. Brooke meets face-to-face with Xavier, and Julian discovers some evidence that helps Dan in his search for Nathan. Clay makes a connection with another patient. GO

EP. # 9.08
Haley receives some news of a possible tragedy, and Dan is forced to confront his dark past as he continues to search for Nathan. Clay takes a step forward in his treatment, and Brooke and Julian deal with Xavier. Chase is pushed to the limits as he worries about Chuck. GO
 

EP. # 9.09
Brooke and Julian take new measures to protect their family. Skills helps Mouth get to a turning point, and Chase faces consequences for defending Chuck. Clay reaches a new understanding with Logan. GO
 

EP. # 9.10
Dan, Julian and Chris Keller attempt to rescue Nathan. Brooke's conflict with Xavier  escalates. Quinn and Clay revisit the past. GO

EP. # 9.11
The search for Nathan becomes increasingly dangerous, and Dan's life hangs in the balance. Brooke is surprised when her father returns. And Clay and Quinn reconnect with Logan.
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EP. # 9.12
As Haley prepares to emcee the annual Tree Hill Burning Boat Festival, Brooke uses the opportunity to process her father's betrayal, while Julian tries to breathe new life into a past idea. Mouth and Millie make a change to their morning show, and Clay and Quinn get ready for Logan's first night at the beach house. GO

EP. # 9.13
In the final chapter of One Tree Hill, the tenth anniversary of TRIC brings old faces and new possibilities for the Tree Hill family. GO