Pamela Jean "Pam" Barnes Ewing is a fictional character from the CBS primetime soap opera Dallas. Pamela is portrayed by actress Victoria Principal, first appearing on the show in the first episode, entitled "Digger's Daughter", which was first broadcast on April 2, 1978. Dallas follows the trials of the wealthy Ewing family in the city of Dallas, Texas, which Pam has married into. Principal played Pam until the end of season 10 in 1987, when the character crashes her car into a truck carrying butane and propane and her body is severely burned. A year later, she was briefly played by actress Margaret Michaels in an attempt to write the character out. Pamela's storylines in season 1 focus on her relationship with her new husband, Bobby Ewing (Patrick Duffy), and her fight against the consid