The Two Mrs. Ewings

S12, E11: There is a startling disclosure at the glamorous Oil Baron's Ball, Dallas' social event of the season. Cally Ewing, J.R.'s new bride, attempts to acclimate herself to the grandeur of Southfork, while he searches for a way to remove her from his life. Sue Ellen receives a visit from a long lost friend from Hollywood and Cliff ardently pursues his relationship with Tammy.