Plot summary
The CBI team is at a loss when the daughter of a federal judge goes missing and her boyfriend in found dead on the extremely well-guarded family compound a day before her grandmother's funeral. It seems impossible that the troubled girl and drug addict Abby left the family estate and her finger prints are found on the weapon used to kill her boyfriend. Jane predicts that the Abby's body is hidden in the grandmother's coffin but is proved wrong. However, the real killer, the family doctor tries to hide Abby's body in the coffin and is caught red-handed. He is revealed to have been supplying Abby with drugs who overdosed and died. He killed the boyfriend to conceal his truth.
Credits
Adapted from Wikipedia contributors, The Mentalist season 3. HTML formatting and reference markers removed.