Gus has worked long and hard organizing their high school reunion, so when Shawn claims one of their fellow alumni has been murdered and his body has been hidden, Gus refuses to believe him. Shawn must now try to solve a case no one things exists before the reunion ends and the attendees escape back to their grown up lives. Gus is in charge of his and Shawn's high school reunion and he wants the night to go perfectly. He warns Shawn not to mess things up, then instructs him to go find more folding chairs. While Shawn heads to the cafeteria with Abigail, his high school crush, he sees, out the window behind her, someone fall to their death from the roof. But by the time they grab Gus and head outside, there is no sign of a body. Gus and Abigail don't believe anything happened, but Shawn claims the victim was wearing a letterman's jacket. Cybill Shepherd and Rachael Leigh Cook guest star.