When new evidence mysteriously surfaces pointing to foul play in Tommy's disappearance, Christopher aims to connect Pamela to the crime. J.R. and John Ross maneuver on two fronts to reclaim their birthright, including poisoning one family member against another. Pamela continues to push her father's agenda to gain control of Ewing Energies. As a new member of the family arrives at Southfork, Ann is pushed to the brink by Ryland's sadistic games and finally takes action.