Back at the police station, Juliet tells Shawn they were unable to find Sampson, but they brought his assistant, Charles Lucas into custody. As Shawn and Gus go to see if they can glean anything from him psychically, Shawn realizes Gus is avoiding him. Shawn remembers seeing Lucas at the river, but the assistant claims he was just there to drop off Stuís car. Shawn doesnít see any signs of lying from Lucas, but notices Gus is exhibiting all of them. Shawn accuses Gus of hiding something, but he denies it. Juliet then tells them they found Sampsonís body in the woods, the victim of an apparent hunting accident. She also says Stu and Sampson had million dollar life insurance policies on each other, which gives Stu a motive for killing Sampson. Shawn tracks down Ruby and her friends at a rock climbing wall to find out what Gus is hiding, but he covers with her friends, telling Derek heís there chasing after Jessica. Derek wishes him luck and offers to give him his key to her apartment. Gus is there, too, and tells Ruby he thinks itís time to tell Shawn everything, given Sampsonís death. Sheís shocked to learn of the murder, and claims Stu is innocent, even though it was Sampson who was bankrupting the company. But Ruby comes clean and Shawn is able to psychically lead the police to Stuís hide out, only when they arrive, they find Stu dead of an apparently self-inflicted gun shot wound.
Chief Vick, along with Shawn and Gus, questions Derek, Jessica and Ruby but none of them know anything else. On the way out, Shawn gets a glimpse of a picture Stuís body on an autopsy report, then visits the coroner who tells him Stu was shot with a Winchester 70 rifle. Shawn psychically reveals this information to Lassiter and Juliet who tell him Jessica owns that same gun. Shawn calls Gus to warn him and Ruby away from Jessica, but Gus tells him Ruby is safely paragliding with Derek. Meanwhile, as they are getting ready to take off from the cliff, Ruby gets a look at Derekís GPS and sees he was at Stuís hide out. Derek is the killer.
Back at the Psych office, Shawn remembers that Derek was a hunter and has a key to Jessicaís apartment. He and Gus rush off to save Ruby, who is stalling for time with Derek. Derek tells her he made a pact to help Stu with Sampson, to make him pay for what he did to Stu. But when Stu found out that he murdered Sampson, he freaked out, so Derek had to kill him, too. Shawn and Gus arrive, and Gus lunges for Derek, knocking them both into a glide off the cliff. Shawn, Ruby and the cops follow the glider as it comes back down to earth, where Gus is saved and Derek is arrested.