<P> Haley confronts Brooke regarding the stolen calculus test . Lucas and Peyton consider taking their relationship to the next level . Peyton and Brooke grow closer . In Deb's absence, Nathan throws a senior party at the Scott House where a sex tape from Nathan's past surfaces . </P> <Tr> <Th> 82 </Th> <Td> 15 </Td> <Td> "Prom Night at Hater High" </Td> <Td> Paul Johansson </Td> <Td> Mike Herro & David Strauss </Td> <Td> February 21, 2007 (2007 - 02 - 21) </Td> <Td> 3T5765 </Td> <Td> 3.15 </Td> </Tr> <Tr> <Td_colspan="8"> <P> It's Prom day, and emotions are running high at Tree Hill . An emotional Haley confronts Nathan about the sex tape and asks for a list of all his past sexual encounters . An angry Peyton asks Lucas to skip the dance altogether, but he refuses to take no for an answer . Brooke and Peyton let out all their frustrations in a confrontation that could tear them apart forever . </P> This episode is named after a song by The Long Winters . </Td> </Tr> <P> It's Prom day, and emotions are running high at Tree Hill . An emotional Haley confronts Nathan about the sex tape and asks for a list of all his past sexual encounters . An angry Peyton asks Lucas to skip the dance altogether, but he refuses to take no for an answer . Brooke and Peyton let out all their frustrations in a confrontation that could tear them apart forever . </P>

When was season 4 of one tree hill filmed