Ronald E. "Ron" Glass (July 10, 1945 – November 25, 2016) was an American actor. He was best known for his roles as Det. Ron Harris in the television sitcom "Barney Miller" (1975–82) and as Shepherd Derrial Book in the short-lived 2002 science fiction series "Firefly" and its sequel movie "Serenity". Glass was born in Evansville, Indiana, the son of Lethia and Crump Glass.