Juliet agrees, and tells him that Felix's psychiatrists say he was completely rehabilitated. Plus he has a medical condition that has him on dialysis, which leaves a person too exhausted to stalk and attack someone. Felix is being framed. Juliet gives Shawn the police files on Felix's original break-in, and the one on Deanna's attempted murder, to see what he can "divine" from them.
Shawn takes the files to Henry who tells his son that police reports aren't gospel, they are just one person's view on what happened. Shawn looks at the crime scene photos from the attack and notices a discrepancy between the shadows in the pictures and how the shadows fell on the apartment wall when they was there – when the crime scene photographer was taking the pictures. Shawn and Gus go to back to the apartment at the same time of day they were there before. Shawn was right – the shadows don't match the pictures, not to mention all the clocks are wrong and a picture is missing. How is this possible? Shawn's figured it out.
He and Gus go to the police station, not only to tell them that they've figured out who the attacker is, but also that he is there in their midst. It's the crime scene photographer. He met Deanna when he photographed her house after Felix broke in. They had been seeing each other ever since, until Deanna started dating the other tennis player and wanted to break it off. The photographer went to her house, confronted her, and hit her with the trophy. He cleaned up all the evidence that he was there but when he looked at all the photos he'd taken of the crime scene, he noticed something in one of them that could incriminate him – his camera bag with his initials in a picture on the shelf. He had to go back and retake the crime scene photos, setting everything up the same way, even setting the clocks back to the right time – everything exactly the same minus the incriminating picture now missing from the shelf.
With the case solved, Gus is able to make it back to his company retreat before it's over, impressing his bosses so much with his attention to his ailing grandmother, they give him a lucrative new distribution route.