Mark Graison returns into Pam's life and explains his long absence. J.R. plots to manoeuvre Cliff and Wendell out. Sue Ellen is scared before going through an alcohol rehabilitation program at the sanitarium. Mark's comeback shocks everyone around. Miss Ellie consults Gary before making a decision on Wendell's Farlow offer. Ray warns Jack Ewing against J.R. Miss Ellie tells Dusty Farlow to stay away from Sue Ellen. J.R. fears that Mark's return will be bad for his relations with Pam. Clayton warns J.R. against pressuring Miss Ellie on the Wendell offer. A burglar shows up at Jack's apartment. Cliff accuses Jack of changing his mind on Wendell's offer. Mark violently confronts J.R. over Pam's recent wild-goose chase in the Caribbean.