<P> Fourteen months have passed since the season six finale, and Dan is now a motivational speaker . He has his own TV show called Scott Free Redemption . He has also written a book with the same title . It is then revealed that he is married to Rachel Gatina . Dan reached out to his son Nathan when he read about him and Renee Richardson, who he meets, asking her to speak on his show . Dan reveals that Renee Richardson was lying about Nathan's alleged affair and exposes her on his show . It is also revealed that Dan did in fact have a heart transplant as he quotes Renee Richardson's con as "Takes a Con to Know a Con ." About a year earlier, Dan traveled to Mexico to have a heart transplant . His new wife Rachel Gatina paid with his money for a family to pull the life support plug on their young son . The heart was then given to Dan . Dan returns to Tree Hill and tries to ask forgiveness from Nathan . Nathan will not forgive Dan, but only "tolerate" him for Jamie's sake . Dan then meets Clay, who he shakes up (by throwing him in the ocean), telling him not to give up on being an agent . On the eve of Nathan and Haley's departure, Rachel gets Dan to do a live broadcast from the school hallway where he killed Keith . Dan then runs into Jimmy's mother, who tells him she will never be able to forgive him . So instead of reading his script, Dan talks about his life and tells his audience that there is no forgiveness for him, only what comes next . He gives everything that he has to charity as well as divorce papers to Rachel . As he is preparing to leave Tree Hill, Nathan meets up with him to tell him that he's back with the Bobcats, and says thank you . He then says goodbye to Jamie . </P> <P> Dan has moved to a diner, and reappears again when Quinn visits him to help her to kill Katie Ryan, and he convinces her not to do it . In the finale, Nathan visits him and gives him a photo of Lydia and a baseball from Jamie's first game and Dan thinks that there is a chance for forgiveness . </P> <P> Dan burns down his diner and returns to Tree Hill and asks Haley for a place to stay, initially resistant, she offers him money, but he says that he doesn't want money . He moves into Nathan and Haley's house, to the delight of Jamie, who is excited to spend time with him . Nathan tells him that he is going to Europe and that when he comes back he wants him to be gone . When Nathan does not return from Europe, Haley and Jamie blame Dan . He rents out the sound stage from Julian and uses it to find Nathan . Dan, Julian, and Chris Keller save Nathan . However, Dan is shot while rescuing Nathan and dies in the hospital surrounded by Nathan, Haley, Deb, Jamie and Lydia . When he dies, he sees a vision of his brother Keith, who brings him to the hallway where Dan shot Keith and he tells him that he forgives him . When Keith goes into the light, Dan asks him "I know where you're going, but what about me?" and Keith says "Don't worry little brother, You're my plus one ." </P>

Who killed dan scott in one tree hill
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