As someone who never caught the series original, but knows of the ID of the killer, can the series be still enjoyed and has it been runined for me??
Oh Yes, TP is one of the most original television shows ever, and it's cult fanbase has been rewatching the series for 20 years. It has a lot to offer outside of the reveal of the mystery. The characters, build up, jokes, music, etc. are top notch.
watching it knowing the killer and mysteryallows you to enjoy the series in another way.