Plastic surgeon Dr. Joshua Leeds (37) was asphyxiated by plastic bag in has long overdue parked car, but first tortured.
He was reported missing weeks ago by fiancée Courtney Morantz. Castle has a forensic expert look into the murder on Becket's mother 15 years ago.
And checks on Owen (15), his daughter's 'suspiciously' inconspicuous prom date. Leeds has threatening dissatisfied patient; and a secret patient, which Becket's FBI friends and Castle's mob contact contact, with surprising results.