Adina Porter plays Sheriff Peterkin in the Outer Banks television series connected to Season 5.
Sheriff Susan Peterkin is a law-enforcement character introduced in the early part of the series. She investigates events involving the Pogues, the Kooks, and the Cameron family, placing her among the adults responsible for responding to the escalating conflicts on Kildare Island.
Porter is an established American television and film actor whose credits include The 100, True Blood, and American Horror Story. Her appearance in Outer Banks is part of the show’s earlier character history rather than a central Season 5 storyline.
This question uses the broader series connection because Sheriff Peterkin is not one of the final season’s principal treasure hunters. She is still a clearly identifiable Outer Banks character, and Adina Porter is the specific actor credited with the role.