S4, E9: Pamela Ewing believes she has at last found her mother, Lucy asks Mitch to marry her, and J.R. closes in on what he thinks is his brother's reckless running of Ewing Oil. The woman Pam thinks is her mother dashes all hopes of a reconciliation and Pam abandons her quest. In the meantime, Lucy and Mitch defy all of the built-in pitfalls to their romance and J.R. stumbles onto a scheme which he intends to use to put Bobby in trouble with their father.