"Bridge Over Troubled Water" is the fourth episode of the sixth season of One Tree Hill and the 110th produced episode of the series. It was broadcast on September 22, 2008. Lucas struggles to inspire the Ravens, while Haley investigates the disappearance of Dan. Brooke confronts an old demon from her past, as Nathan comes to terms with Deb's relationship with Skills. Peyton is surprised when a famous musician visits her studio.