: Both Tyler Hilton (Chris Keller) and Paul Johansson (Dan Scott) rejoined the cast as series regulars for this final season.

is the premiere episode of the ninth and final season of the drama series One Tree Hill . As the beginning of the end for the series, the story focuses on the characters navigating new roles as parents while being haunted by returning shadows from their past. Story Overview

The episode intertwines the chaotic early days of parenthood with mysterious, looming threats:

You can find more detailed reviews and episode breakdowns on platforms like IMDb and the One Tree Hill Wiki .

: Clay begins experiencing strange episodes of sleepwalking, once waking up in a park with no memory of how he got there. Despite Quinn’s pleas for him to seek medical help, he initially remains in denial.

: The episode ends on an ominous note with someone watching Haley’s house from the shadows, setting a dark tone for the final season. Production Details & Trivia Original Air Date : 11 January 2012.

: Chris Keller returns to Tree Hill after a five-year absence to run Red Bedroom Records, immediately clashing with Alex over her music production.

"One Tree Hill" Know This, We've Noticed (TV Episode 2012) - IMDb

[s9e1] Know This, We've Noticed Online

: Both Tyler Hilton (Chris Keller) and Paul Johansson (Dan Scott) rejoined the cast as series regulars for this final season.

is the premiere episode of the ninth and final season of the drama series One Tree Hill . As the beginning of the end for the series, the story focuses on the characters navigating new roles as parents while being haunted by returning shadows from their past. Story Overview

The episode intertwines the chaotic early days of parenthood with mysterious, looming threats: [S9E1] Know This, We've Noticed

You can find more detailed reviews and episode breakdowns on platforms like IMDb and the One Tree Hill Wiki .

: Clay begins experiencing strange episodes of sleepwalking, once waking up in a park with no memory of how he got there. Despite Quinn’s pleas for him to seek medical help, he initially remains in denial. : Both Tyler Hilton (Chris Keller) and Paul

: The episode ends on an ominous note with someone watching Haley’s house from the shadows, setting a dark tone for the final season. Production Details & Trivia Original Air Date : 11 January 2012.

: Chris Keller returns to Tree Hill after a five-year absence to run Red Bedroom Records, immediately clashing with Alex over her music production. Story Overview The episode intertwines the chaotic early

"One Tree Hill" Know This, We've Noticed (TV Episode 2012) - IMDb