Stephen Hartley Dorff Jr. is an American actor, known for portraying Roland West in the third season of HBO's crime drama anthology series True Detective, PK in The Power of One, Stuart Sutcliffe in Backbeat, Johnny Marco in Sofia Coppola's Somewhere, Glen in The Gate, and for his roles in Cecil B. DeMented, The Motel Life, S.F.W., Space Truckers, and in Blade as vampire-overlord Deacon Frost. Wikipedia