After Doyle's death, he briefly appears in the third-season episode "Birthday" and the fifth-season episode "You're Welcome," the former in a flashback and the latter courtesy of the Angel Investigations commercial he and Cordelia had made before he died, which Cordelia watches as she reflects on the team's history.

Does Doyle die in Angel?

However, just 9 episodes into the series, Doyle was killed off. Glenn Quinn was tragically dealing with a number of substance abuse issues during the filming of Season 1 and eventually sadly died of an accidental overdose just two years after he left the series.

What happens to Doyle on Angel?

Sadly, that wasn't the first loss the cast endured. Quinn, who played the half-demon Doyle during the first season — and was familiar to Roseanne fans as Becky's husband, Mark — died of a heroin overdose in 2002 at age 32. “Glenn played a great character, but also became a really close friend of mine,” says Boreanaz.