LOGLINE: Shawn finds himself alone out on a limb when he contends that a dead man who washes ashore was killed in a manner that misses the agreed death timeline- by approximately sixty five million years.
SYNOPSIS: Detective Lassiter is on a roll. He's closed nine cases in a row and since he's been on such a hot streak, the department hasn't had to call for outside help, leaving Shawn feeling very unneeded. When a dead body is found on the beach, Lassiter invites Shawn along to show him how it's done. At the crime scene, there is little to go on except puncture wounds on the body. Desperate to get on the case, Shawn looks at the marks and claims he knows who is responsible - a Tyrannosaurus Rex.
Even though Shawn threw out his theory as a guess, upon thinking about it further, he's sure the bite radius of the T-Rex actually matches the marks on the victim with surprising accuracy. The coroner says the man died from a hit on the head and then a fall onto a hard object. But Shawn, still convinced there's some truth to his theory, shows up at the morgue with a large papier mache dinosaur head to confirm the bite marks match up. The police think he's grasping at straws and tell him to seek help. Interim Chief Vick actually calls up Henry suggesting he set up an intervention for his son. But while Shawn is successfully convincing the psychiatrist of his psychic abilities, Vick and Lassiter show up to announce they have an ID on the victim. He's Christopher Franzen - a paleontologist.
Shawn and Gus go to the university where Franzen was a professor and learn that his paleontology department was in danger of being shut down. His assistant Ethan tells them Franzen was a terrible advisor, always tired and disheveled. When they show up at the victim's house, the cops are already there. They decide to check out the shed in the backyard instead, and after picking the high tech lock on it, they discover a collection of dinosaur bones better and more comprehensive than the department's, and serious digging equipment, some of which is missing. Shawn also finds something that looks like a large tic-tac-toe grid. Lassiter and Juliet figure one of the missing tools was probably the murder weapon, which most likely will be found in the bed of Franzen's missing truck. As they leave, Shawn notices many empty boxes from a fruit stand that is over 50 miles away, a long way to travel for a peach, no matter how good it is.