Sterling K. Brown is an actor who appears as Agent Higgins in White Lines, he's best known for his portrayal in Supernatural (with Emily Swallow, Mark Pellegrino, Jim Beaver, etc) as the Ruthless hunter Gordon Walker, Person of Interest as Detective Cal Beecher and American Crime Story: The People vs O.J. Simpson (with Michael McGrady, Chris Conner, Brandon Morales, Jeris Lee Poindexter, Brian Konowal, Christian Clemenson and Leonard Roberts) as Real Life Public Defender Christopher Darden, for which he won the Primetime Emmy Award for Outstanding Supporting Actor in a Limited Series or Movie.