Nick and Hank are called when a victim appears to have died from clay-induced asphyxiation; Wu grows more suspicious of Trubel's presence.
Rosewood reveals the blueprint for the perfect murder during a speech at an out-of-town forensic pathology convention, with deadly results; TMI's estranged father pays an unexpected visit.
When a student finds a former teacher's car keys in an old desk, Lilly and the team take a new look at the teacher's death, previously thought to be a fatal carjacking.
When a secret admirer's ghost stalks Ned's professor, a Ouija board is used to solve the mystery.