"I'd rather die on an adventure than live standing still." 
 I am SOOOO glad I decided to start this series. 
 In this book there are four versions of the same world, all with one common tie- they each have a London. There is Red London, ruled by the royal Maresh family, Grey London, which is absent of magic, White London, whose magic is slowly being drained and is ruled by whoever can kill their way to the throne, and the terrifying Black London, more myth than reality. 
 Kell belongs to Red London, specifically the royal family, which is filled with magic. He is a Traveler, able to venture to all of the Londons, and there are only two of his kind in existence. Kell also has a nasty habit of smuggling items between Londons which lands him in a dangerous situation that leads him straight into the hands of the thieving, snarky Delilah Bard. 
 The thing that sells this book is the world building. Not once was I left wanting or wondering about these magical settings, as Schwab's lush and lively descriptions paint the picture of these unique parallel Londons that make for one of the most thrilling and detailed settings I've read about. 
 The main protagonists each shine with their respective strengths and complement each other well. I also like how the relationship between the two developed; it was gradual and fulfilling to see how they slowly came to trust one another. Make no mistake- romance is NOT one of the focuses of this book, but the seeds were laid for its potential, and I can't wait to see how/if it comes to fruition. The supporting characters were equally as impressive-Rhy in all of his cocky, bisexual glory that hides a serious boy and brooding Holland, one of the main antagonists, whose dark and twisted soul consume him. 
 As soon as I finished this book I jumped up and immediately drove to the bookstore to buy A Gathering of Shadows. I am invested- in this world, these amazing characters, and what the future hold for them and all of the Londons. I am a definite new fan of Victoria Schwab.