Already a massive fan of Victoria Aveyard's incredible book The Red Queen? It knocked The Fault In Our Stars off the best sellers list, sold in 26 different countries and is soon to become a huge Universal Pictures movie with Hunger Games' Elizabeth Banks, so we bet you've probably heard of it.
If Mare's intense story won you over the first time (or if you just LOVE dystopian fiction) then prepare to get oh so excited, because Victoria's written a sequel and it's out TODAY, so here's everything you need to know about Glass Sword.
Glass Sword continues the story of seventeen-year-old Mare Barrow, a Red-blooded servant, in her quest to bring down the Silver elite who rule over her society in a dystopian world, with a caste system organised according to blood colour.
Her blood may be Red - the colour of common folk - but her Silver ability, the power to control lightning, has turned her into a weapon that the royal court tries to control.
As she sets out to recruit other fighters of her own kind, Mare soon finds herself on a deadly path, at risk of becoming exactly the kind of monster she is trying to defeat.
SOUNDS SO GOOD, but we know what you're thinking, pal. Would you be Red blooded, Silver blooded or Newblood if you lived in Mare's world? Time to find out with our very scientific quiz:
OOOH, we wanna know your result now, so chuck a tweet over to us @Sugarscape and let us know whether you're gonna grab a copy of Glass Sword.
NOW READ THIS LOT TOO