Tension between Ewing Oil and Weststar rises in the aftermath of the European deal. April vows not to let the crank phone calls get to her. Tommy McKay returns to Dallas and shows up in Bobby's office with an apology. Miss Ellie and Clayton continue to try to resolve the mystery of the key for Jock. Bobby accuses Cliff of neglecting Ewing Oil business. Cliff goes to Charleston, South Carolina to search for Van Buren. April's sister Michelle Stevens appears and meets Bobby. Tommy plots a bomb attack.