Christopher Heyerdahl, who plays an ancient vampire in the Twilight Saga movies, will now play one in another screen adaptation of a popular book series, this time on TV. Heyerdahl is joining HBOâ€™s hit vampire drama True Blood in a recurring role. He will portray Dieter Braun, an ancient, powerful vampire who plays a large part in the intelligence of the Authority and especially enjoys enhanced interrogation. That is familiar territory for Sanctuary alum Heyerdahl who played the ancient Volturi vampire Marcus in 3 of the Twilight movies: New Moon, The Twilight Saga: Breaking Dawn â€“ Part 1 and the upcoming Part 2. Additionally, he played a demon in an arc on the CWâ€™s Supernatural. Heyerdahl, repped by Open Entertainmentâ€™s Lesa Kirk, currently co-stars on the AMC drama series Hell On Wheels, playing Norwegian badass The Swede. The period Western was recently renewed for a second season.