Going into books blind, particularly books like Vicious, can be infinitely thrilling. You enter unexplored land and everything is new. You don't follow the tracks paved by expectations built upon the reading experiences of others. The cover states that it's "a twisted tale of ambition, desire and superpowers". It's very correct in that description. That's your starting point if you're up for a thrill. If that's you, then go on, pick up the book, read it and return to my review later to share your excitement. Now, if you'd rather know what you're getting yourself into, read on.