Dallas S12E12 - The Switch

April complains to J.R. that he didn't tell her about Cally. Cliff tries to turn his dates with Tammy into a relationship. Cally vows to stay at Southfork and make her marriage to J.R. work. McKay tells Bobby he's good for Tracey. Cally asks J.R. whether he slept with April. Christopher makes friends with Cally. Sue Ellen gives a little advice on how to handle J.R. McKay wants Tracey to work for Weststar. J.R. hires a cop to find out about McKay. Cally tells J.R. he'll have to marry her again at Southfork. Tammy breaks up with Cliff. Tension rises between Cally and John Ross. Bobby tells Christopher that Pam will never come back. J.R. learns that Nicholas Pearce's father is looking into his son's death.