"It Gets The Worst At Night" is the seventeenth episode of the fourth season of One Tree Hill and the 84th produced episode of the series. It was broadcasted on May 9, 2007. The teens of Tree Hill mount a rescue mission to retrieve Marvin from his ill-advised road trip with Rachel. While on the trip, Haley and Nathan get a second chance to enjoy the prom, and Lucas and Peyton decide to take their relationship to the next level. Brooke tells Haley that she lied about stealing the calculus exam, and Nathan struggles with the residue of a past mistake.