I do like a bit of Mulitiverse, as soon as Schrodingers Cat gets a mention I am all fidgety and excited. So when I started reading this and the Cat was mentioned and the main character was strudying Quantum Physics I knew I was in for a ride. 
 This is a mind bending read, it really pushes your brain to try and understand the concepts of multiverse, where every decision you make creates another universe where you live where you made the other decision. Which in itself had you staring at a blank wall deep in thought. But then you think about all the decisions you make each day and your brain starts to shut down and re-directs you to the crack in the wall that you really ought to plaster over. 
 I have to say, Blake Crouch explains the concept of multiverse very very well. Whilst he still makes you feel small and insignificant in relation to 'everything', you do actually understand the mechanics behind what the story is telling you as you read. You don't think 'wtf? how is that possible". You just say 'wtf? Ow! My brain hurts". Which is really, really, really interesting, because the theory behind it all, is that are brains are wired to protect us from seeing the multiverse. We are stuck in our 3D landscape and if we even glimpsed into other dimensions, well, we'd go mad. 
 So this is a journey into a multiverse world, where you begin to understand the concept and will only go a little mad. 
 I don't need to discuss the book here. Any review you read that discusses the book will have to be a spoiler if it discusses the plot, because I can't think of what I could say about the story without spoiling it. 
 I will say the Characters are well written, the pacing is excellent and it easily, easily is my favourite book of the year. Yeah yeah I know it's January. 
 In another universe, I decided not to read this book, that Lee decided to give Wheel of Time another go. That Lee is no where near as happy as this Lee. 
 Buy the book, bend your mind. oh! and! The audiobook is very well narrated. Listen to it instead, it allows you to stare at walls more. Don't listen and drive. One of the you's that did that probably ran a red.