171 «Charlie»
Bobby advises Jenna to tell Charlie that Marchetta is her father. Jenna promises Sue Ellen that she will consider taking a job at Ewing Oil. Cliff is convinced that J.R. and Wendell have joined forces to ruin him. Ray tells Donna about Lucy's job as a waitress. Charlie disappears and Marchetta is under suspicion. J.R. introduces himself to Mandy. Cliff, hearing that J.R. has made a pass at Mandy, encourages her to accept J.R.'s advances and spy for him. Ray finds Charlie asleep in her horse's stall. Charlie later tells Jenna and Bobby that she was confused when she saw her birth certificate naming Bobby as her father.
172 «Barbecue Five»
With Cliff's approval, Mandy keeps a lunch date with J.R. Pam visits Mandy's psychic, who states that Mark is alive. Cliff confronts Wendell regarding the deal with J.R., but Wendell suggests that Cliff is paranoid and denies that J.R. was behind the merger offer. Marchetta announces that he intends to remarry Jenna. Ray goes to the barbecue alone when Donna's business matters prevent her from attending. J.R. is pleased when he realizes that Mandy has provided a new pipeline to Cliff. When J.R. orders Jamie off the ranch, she produces a legal document stating that Ewing Oil is jointly owned by Jock, her father, and Digger Barnes.
173 «Do You Take This Woman...»
Eddie seduces Lucy in a deserted stable. J.R. and Bobby decide to buy the Weststar fields after reading a favorable report. J.R. tells Mandy he hopes Cliff becomes pre-occupied with proving Jamie's document is legal so he can move in and destroy Barnes-Wentworth. Mandy passes on J.R.'s thoughts to Cliff. Jenna is panic stricken when she learns that Marchetta has picked up Charlie from school. Jenna doesn't show up for her wedding ceremony. Later, Bobby and J.R. find a note at Jenna's condo that she can't marry Bobby because she loves someone else.
174 «Deja Vu»
J.R. and Bobby plan to search for Jenna, who they believe has run away with Marchetta. Cliff tells Mandy that he doesn't want Bobby and Pam to reconcile any more than J.R. does. Pam must hide her happiness at the news of Bobby's cancelled wedding. Cliff and J.R. agree to work individually to keep Pam and Bobby apart. Marchetta tells Jenna that Charlie is on a plane to Rome. J.R. pays off the charter pilot who misled Pam into searching for Mark in the Caribbean. Jenna tells Bobby she has married Marchetta.
175 «Odd Man Out»
J.R. tries to console Bobby about Jenna's marriage to Marchetta. Mandy tells Cliff that she likes J.R. and pretends to be teasing though she really may be serious. J.R. tells Bobby that Pam doesn't care about him because she's obsessed with finding Mark. Jenna, being held captive by Marchetta, tries to call Bobby for help. Jenna follows Marchetta into a dimly lit room and a man's hand goes over her face. A dazed Jenna, with gun in hand is cornered by police as she spots Marchetta, who lies dead on the floor nearby