 Sue Ellen begins to investigate Holly s claim that JR is being unfaithful. JR, meanwhile, flies to Peurto Rico in hopes of retrieving what he can out of the forty millions dollars he lost without having to fly to Cuba. After learning that Pam has flown to France with Mark Graison, Bobby takes Christopher out to Southfork, where Punk Anderson is discussing Clayton s intentions with Miss Ellie. Mickey s aunt calls and Donna talks her into flying down from Kansas, much to Mickey s chagrin. Katherine continues to burn the candle at both end, plotting with JR to help him win Ewing Oil, and get her sister out of Bobby s life so she can replace her, and now agrees to help Bobby secure a special kind of drill bit designed for cold weather drilling.