To summarize: Billy Hargrove dies in Season 3, Episode 8, about 57 minutes in, during the final battle at the Starcourt Mall. He’s possessed for two episodes before that, so his “soul death” happens earlier in Episode 6. But his final, oxygen-depriving, goo-forming, heart-wrenching death is in the finale.
Mark it on your calendar: July 4, 1985. (In the show, that is. In real life, the episode aired in 2019, and we all cried into our microwave popcorn.)
Now, if you’re rewatching, enjoy the moment when Billy drives his car through a window, flips off the police, and then later dies in a puddle of meat. It’s a rollercoaster of emotions, just like the show itself. And hey, at least he finally stopped getting shirtless. That’s a win for decency.
(Note: If you’re still reading this and haven’t seen the show, congratulations on being spoiled. You’re welcome.)