Colin Hamilton is an actor who played Inspector Hamilton in five episodes, and a doctor in one episode of Dark Shadows. He was Inspector Hamilton in episodes 1040, 1041, 1048, 1056, and 1057. He was a doctor in episode 1219.
Colin Hamilton played supporting roles in many series and movies over five decades. He had parts in Wonder Woman, Eight is Enough, The Greatest American Hero, and Matlock, and movies Two Minute Warning, Eleanor and FranklinThe White House Years, and Flashdance.
Colin Hamilton at imdb.com: http://www.imdb.com/name/nm0357794/