Roy Thinnes

Roy Thinnes (born April 6, 1938) is an American television and film actor best known for his portrayal of lonely hero David Vincent in the ABC 1967-68 television series The Invaders. He also played Alfred Wentworth in the pilot episode of Law & Order. He starred in the 1969 British science fiction film, Journey to the Far Side of the Sun (also known as Doppelgänger).