Glenn Quinn – Heroin Overdose

During the ’90s, many people knew handsome actor Glenn Quinn for the starring role he played as Mark Healy on the popular sitcom Roseanne. His popularity later grew tremendously when he was cast in the role of Doyle on the Buffy the Vampire Slayer spinoff Angel.

Quinn battled substance abuse for years, to the point where he was homeless by the early 2000s. Because he never got the help he needed, a heroin overdose eventually claimed his life at the age of 31 back in 2002. His final on-screen roles were in R.S.V.P. and Fair City.