J.R. tries to question Jessica about Clayton's past. Vaughn Leland threatens to pull the plug on the money for Cliff. Clayton warns Jessica that J.R. can be dangerous. Katherine and Bobby celebrate the successful purchase of Wentworth land by Ewing Oil. J.R. overhears Clayton and Jessica talking about a secret. Pam is a little disappointed that Mark wants such a big wedding. Sue Ellen questions Pam about why she changed her mind and decided to marry Mark after all. Jenna tells Pam that Bobby still hasn't asked her to marry him. J.R. learns that Clayton has something to hide from his past. Cliff frantically tries to raise money, and even goes through Afton's bank books and questions the way she's been spending money. Lucy apologizes to Peter for the scene she made, and they vow to be friends again. J.R. has a showdown with Katherine and she vows to kill him. Clayton tells Donna and Ray that he thinks Jessica is just too direct and unpredictable. J.R. pays oil crewman to slow down Cliff