Episode 4.01: Lazarus Rising
Traci Dinwiddie, a vivacious thirty-five year old brunette, has been cast in the guest starring role of 'Pamela Barnes' in the season four opener of the hit CW/Warner Bros series Supernatural. [...] In the episode titled "Lazarus Rising" which began filming on July 2nd and will air on the CW Network [this fall], the beautiful and exotic looking Dinwiddie plays Pamela Barnes, who is described in the casting sides as being 'kick ass hot looking in a Gina Gershon kind of way'. Pamela also just happens to be, in the words of the Winchester brother's good friend Bobby Singer, 'the best damn psychic in the state'. Pamela has been contacted by her old friend Bobby to help he and Sam Winchester track down demons and to possibly learn more about the fate of Dean Winchester who was last seen in the Supernatural season 3 finale "No Rest for the Wicked" hanging by hooks pierced through his flesh after being dragged into hell by demonic hounds sent to fetch his soul in consummation of deal he had made to trade his soul for the life of his brother.

Credito/credit to : TV Guide Online

Kristy - Female, 20s, sexy, snarky and adept at adjusting to any and every situation. Recurring 5 episode arc. Castiel - Male, 30s or 40s, charismatic, calm and very good at getting people's attention. Recurring.

credito/credit to : SpoilerTV