Crown Affair and Three Days of the Condor . He was best known for playing Dr. Eric Lang, a mad scientist who created Adam, on Dark Shadows . [1] [2] (February 23, 1921 – November 8, 2010) http://www.youtube.com/v/PlJwf1-tWbs?fs=1&hl=en_US Powell was born in 1921 in Belmont, Massachusetts . [1] [2] His parents, Edward