Buffy the Vampire Slayer, the ground-breaking series known for its wit, great characters and - of course - its iconic female lead, should by rights be consigned to TV history books, but due to the show's popularity being so huge it has never really gone away. She may have staked her last on-screen vampire nearly twelve years ago (now you feel old) but the adventures of Buffy Summers and her friends are still being told to this day through the official comic book continuation of the show and there are always rumours of a reboot of the franchise. That last one might not be a good thing - it probably wouldn't involve Buffy creator Joss Whedon after all - but it just goes to show people still have a thirst for the Slayer and her scoobies. Across the years, fans have studied and analysed the show's 144 episodes over and over but this article will prove that Sunnydale still has some secrets left as it looks back at 20 mind-blowing, heart-slaying facts about the Buffyverse that you probably didn't know. Want to know about alternative routes the show could have taken? Want to know shocking behind the scenes trivia? Then read on to find out...