Real World article
(written from a Production point of view)

S. Moriarty is the name of the actor who appeared as the dead Joseph A. Longo in the Star Trek: The Next Generation fourth season episode "Night Terrors" in 1991. The same year, he played a dead Klingon officer in the fifth season episode "Redemption II". He also appeared as a different Klingon in this episode in several scenes in the Klingon nightclub and the Great Hall. In the latter scene he was one of the Klingon councilmen with capes.