One Tree Hill — Season 1, Episode 19: How Can You Be Sure?

Episode synopsis

Lucas must make a difficult decision regarding Brooke. Haley considers having sex with Nathan.

About One Tree Hill

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 his skills are appreciated only by his friends at the river court. Popular, affluent Nathan basks in the hero-worship of the town, as the star of his high school team. And both boys are the son of former college ball player Dan Scott whose long ago choice to abandon Lucas and his mother Karen, will haunt him long into his life with wife Deb and their son Nathan.

More episodes from Season 1

• E1Pilot
• E2The Places You Have Come to Fear the Most
• E3Are You True?
• E4Crash Into You
• E5All That You Can't Leave Behind
• E6Every Night Is Another Story
• E7Life in a Glass House
• E8The Search for Something More
• E9With Arms Outstretched
• E10You Gotta Go There to Come Back
• E11The Living Years
• E12Crash Course In Polite Conversations