[s9e1] Know This, We've Noticed Official

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

: Brooke and Julian are adjusting to the exhaustive demands of raising their new twins, while Haley and Nathan face similar challenges with their children.

"One Tree Hill" Know This, We've Noticed (TV Episode 2012) - IMDb [S9E1] Know This, We've Noticed

: This episode features the first on-screen appearance of Brooke’s father, Ted Davis.

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

: James Lafferty (Nathan) and Bethany Joy Lenz (Haley) are the only cast members to appear in every single season premiere of the show.

: 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. : James Lafferty (Nathan) and Bethany Joy Lenz

: 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.