Lassiter's current hot streak has left Shawn feeling neglected by the police department. With Lassiter single-handedly solving case after case, there has been little need to bring in outside help from Shawn and Gus. However, when an unknown man washes up on shore with unusual scarring, Lassiter is stumped. Luckily, Shawn has a theory of what caused the injury—a dinosaur. Confident in his theory, Shawn and Gus set out to connect a dinosaur to the man's death.