Proof Positive

S10 E11: Wes Parmalee makes a startling disclosure at the annual Oil Baron's Ball in front of Dallas' finest. After he is confronted by J.R., Bobby and Clayton, Parmalee reluctantly agrees to a lie detector test in order to prove he is the true owner of Ewing Oil. In an attempt to resolve the situation, Miss Ellie requests a secret meeting with Parmalee while Clayton arrives at his own disturbing resolution. April Stevens plots to cash in on her ex-marriage to Jack Ewing.