BBC America
Series 2 premiered on BBC America on 20 October 2007. Unlike the previous series, each episode premiered in the United States only nine days after its initial UK broadcast. However, the final three episodes were broadcast in reverse order (with Episode 12 being shown on BBC America a few days earlier than on BBC Two. The same thing occurred in Series 4 with the Christmas special airing on BBC America 10 days before the BBC Two broadcast.