Dallas (1978)

S13E1 Phantom of the Oil Rig

After the confrontation in Europe, a fierce rivalry ignites between Ewing Oil and Weststar. Cliff is consumed by his responsibilities at the office. Meanwhile, April's sister, Michelle, arrives in Dallas, stirring up past tensions. Tommy comes back, hoping to reconcile with those he’s hurt. In the midst of this turmoil, Miss Ellie embarks on a quest to discover what Jock's mysterious key unlocks, adding another layer of intrigue to the family saga.