Season 4
The inhabitants of Tree Hill have witnessed Lucas' metamorphosis from loner to high school basketball star, Nathan and Haley's troubled marriage and Peyton and Brooke's tumultuous friendship. As the group of high school seniors find themselves dealing with life-altering experiences they will never forget, the adults in Tree Hill continue to deal with the residue of decisions they made years ago.
Episodes
1 The Same Deep Water as You Sep 27, 2006 
2 Things I Forgot at Birth Oct 4, 2006 
3 Good News for People Who Love Bad News Oct 11, 2006 
4 Can't Stop This Thing We've Started Oct 18, 2006 
5 I Love You But I've Chosen Darkness Oct 25, 2006 
6 Where Did You Sleep Last Night? Nov 8, 2006 
7 All These Things That I've Done Nov 15, 2006 
8 Nothing Left to Say But Goodbye Nov 22, 2006 
9 Some You Give Away Nov 29, 2006 
10 Songs to Love and Die By Dec 6, 2006 
11 Everything In Its Right Place Jan 17, 2007 
12 Resolve Jan 24, 2007 
13 Pictures of You Feb 7, 2007 
14 Sad Songs for Dirty Lovers Feb 14, 2007 
15 Prom Night at Hater High Feb 21, 2007 
16 You Call It Madness, But I Call It Love May 2, 2007 
17 It Gets the Worst at Night May 9, 2007 
18 The Runaway Found May 16, 2007 
19 Ashes of Dreams You Let Die May 30, 2007 
20 The Birth and Death of the Day Jun 6, 2007 
21 All of a Sudden I Miss Everyone Jun 13, 2007