When a high school girl's body washes up on the beach, Patrick Jane sets a mentalist trap in order to get her surfing friends to turn on each other and reveal what really happened.

When a girl is found covered in blood and holding the murder weapon that killed her best friend, she becomes an obvious suspect, though she can't remember anything. But Jane, believing she's innocent, engineers a risky maneuver in which she must relive the terrifying events in order to spark her memory.