Jack Huston (ABC series “Eastwick,” which debuts next month) has fanged his way on to Summit Entertainment’s threequel The Twilight Saga: Eclipse, writes the Hollywood Reporter. The actor joins Robert Pattinson, Kristen Stewart and Bryce Dallas Howard in the third installment of the vampire series derived from Stephenie Meyer’s novels. Huston will play Royce King II, a human that lived during the Great Depression. Production begins shortly in Vancouver under the direction of David Slade (30 Days of Night). It’s scheduled for a June 30 release.