8.3/10415 votes#1 - Know This, We've Noticed
Season 9 Episode 1 - Aired 1/11/2012
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.
Director: Mark Schwahn
Writer: Mark Schwahn
7.7/10286 votes#2 - In the Room Where You Sleep
Season 9 Episode 2 - Aired 1/18/2012
Brooke and her father discuss a new business venture; Julian worries about his investment; Quinn talks Clay into getting help; Millie tries to be honest with Mouth; Alex receives a tempting offer.
Director: Joe Davola
Writer: Mark Schwahn
7.8/10291 votes#3 - Love the Way You Lie
Season 9 Episode 3 - Aired 1/25/2012
Dan helps a struggling Haley at Karen’s Café. 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.
Director: Paul Johansson
Writer: Lenn K. Rosenfeld
8.2/10299 votes#4 - Don't You Want to Share the Guilt?
Season 9 Episode 4 - Aired 2/1/2012
As Julian deals with his guilt, Brooke helps Haley confront a new rival cafe, and its difficult owner. Meanwhile, Chase's new girl has a complicated secret, and Quinn takes extreme measures that help Clay realize he's worse off than he thought.
Director: Les Butler
Writer: N/A
8.2/10290 votes#5 - The Killing Moon
Season 9 Episode 5 - Aired 2/8/2012
As Quinn distracts Jamie, Haley searches for Nathan. Clay finally gets answers about his condition. Meanwhile, Julian attempts to get back to a normal life, while Brooke tries to give Tara a chance.
Director: Gregory Prange
Writer: N/A
8.1/10275 votes#6 - Catastrophe and the Cure
Season 9 Episode 6 - Aired 2/15/2012
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 Café, and Chris Keller confronts Chase about Tara.
Director: James Lafferty
Writer: N/A
8.3/10338 votes#7 - Last Known Surroundings
Season 9 Episode 7 - Aired 2/22/2012
Haley seeks help from Lucas as Nathan (James Lafferty) makes an escape attempt. Brooke comes face-to-face with Xavier. Juliain uncovers evidence that assists Dan in his search for Nathan. Clay makes a connection with another patient.
Director: N/A
Writer: Mark Schwahn
8.5/10311 votes#8 - A Rush of Blood to the Head
Season 9 Episode 8 - Aired 2/29/2012
Haley receives news of a possible tragedy. Dan’s search for Nathan leads him back to his dark past. Clay has a breakthrough in his treatment. Brooke and Julian deal with Xavier. Chase’s concern for Chuck pushes him to his limits.
Director: Gregory Prange
Writer: N/A
8.2/10275 votes#9 - Every Breath Is a Bomb
Season 9 Episode 9 - Aired 3/7/2012
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.
Director: N/A
Writer: N/A
9.1/10396 votes#10 - Hardcore Will Never Die, But You Will
Season 9 Episode 10 - Aired 3/14/2012
Dan, Julian and Chris Keller attempt to rescue Nathan. Brooke’s conflict with Xavier escalates. Quinn and Clay revisit the past.
Director: Mark Schwahn
Writer: Mark Schwahn
9.4/10607 votes#11 - Danny Boy
Season 9 Episode 11 - Aired 3/21/2012
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.
Director: Joe Davola
Writer: Mike Herro, David Strauss
8.4/10303 votes#12 - Anyone Who Had a Heart
Season 9 Episode 12 - Aired 3/28/2012
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.
Director: Sophia Bush
Writer: Brian L. Ridings
9.3/10846 votes#13 - One Tree Hill
Season 9 Episode 13 - Aired 4/4/2012
In the final chapter of One Tree Hill, the tenth anniversary of Tric brings old faces and new possibilities for the Tree Hill family.
Director: Mark Schwahn
Writer: Mark Schwahn
The Best Episodes of One Tree Hill Season 9
Every episode of One Tree Hill Season 9 ranked from best to worst. Discover the Best Episodes of One Tree Hill Season 9!
In Tree Hill, North Carolina two half brothers share a last name and nothing else. Brooding, blue-collar Lucas is a talented street-side basketball player, but...
Genre:Drama
Season 9 Ratings Summary
"Know This, We've Noticed" is the best rated episode of "One Tree Hill" season 9. It scored 8.3/10 based on 415 votes. Directed by Mark Schwahn and written by Mark Schwahn, it aired on 1/11/2012. This episode is rated 0.6 points higher than the second-best, "In the Room Where You Sleep".