Plot summary
Nathan is offered a basketball scholarship at Duke which Dan tells him to accept. However, Haley is pregnant, initially leaving Nathan shocked. Later at a press conference he disappoints Dan by saying he has to discuss what to do with his wife who is pregnant. Brooke goes on a date set up by Rachel with a male model, Nick, who thinks she is 23. They sleep together and it is later revealed he is a teacher. Peyton learns Derek has been stalking her via the webcam and is not her brother.
Lucas alerts the police. Peyton is attacked by 'Derek' at home, who has covered her room in thousands of pictures of her. Derek reveals it was him messaging her all along and is in love with her. Lucas arrives and fights with Derek, who gets the upper hand and prepares to kill Lucas. Her real brother - the real Derek who was initially arrested by the police – comes to the house and hits 'Derek', freeing Peyton. Then Lucas and Derek throw 'Derek' out of the window. The Police arrive but 'Derek' has disappeared.
Nathan accepts a car as a gift from a man, Daunte, who claims to be a Ravens fan. Dan finds another note on his wall ‘Genesis 4:10.’, which is about murder. He tells himself it is like the rest and all in his head until Whitey stops by and reveals he can see it too. This episode is named after the band I Love You But I've Chosen Darkness.
Credits
Adapted from Wikipedia contributors, One Tree Hill season 4. HTML formatting and reference markers removed.