Title: How Can You Be Certain? Plot: Lucas faces a tough choice about his relationship with Brooke, weighing the consequences of his feelings. Meanwhile, Haley grapples with the idea of taking a significant step with Nathan, contemplating the implications of their intimacy.
Show
One Tree Hill
Episode
S01E19
Air Date
Apr 20, 2004
Season 1 Episodes
S01E01
Pilot
S01E02
The Places You Have Come to Fear the Most
S01E03
Are You True?
S01E04
Crash Into You
S01E05
All That You Can't Leave Behind
S01E06
Every Night Is Another Story
S01E07
Life in a Glass House
S01E08
The Search for Something More
S01E09
With Arms Outstretched
S01E10
You Gotta Go There to Come Back
S01E11
The Living Years
S01E12
Crash Course In Polite Conversations
S01E13
Hanging by a Moment
S01E14
I Shall Believe
S01E15
Suddenly Everything Has Changed
S01E16
The First Cut is the Deepest
S01E17
Spirit In the Night
S01E18
To Wish Impossible Things
S01E19
How Can You Be Sure?
S01E20
What Is and What Should Never Be
S01E21
The Leaving Song
S01E22
The Games That Play Us