Dark Shadows is an American gothic soap opera that originally aired weekdays on the ABC television network, from June 27, 1966, to April 2, 1971. The series became hugely popular when vampire Barnabas Collins (Jonathan Frid) appeared a year into its run. Dark Shadows also featured werewolves, zombies, man-made monsters, witches, warlocks, time travel, and a parallel universe. A small company of actors each played many roles; indeed, as actors came and went, some characters were played by more than one actor. Major writers included Art Wallace, Malcolm Marmorstein, Sam Hall and Gordon Russell.