A darker shade of magic by V.E. Schwab

Rating 5/5

Summary from goodreads.
Kell is one of the last Travelers—rare magicians who choose a parallel universe to visit. 
Grey London is dirty, boring, lacks magic, ruled by mad King George. Red London is where life and magic are revered, and the Maresh Dynasty presides over a flourishing empire. White London is ruled by whoever has murdered their way to the throne. People fight to control magic, and the magic fights back, draining the city to its very bones. Once there was Black London—but no one speaks of that now.
Officially, Kell is the Red Traveler, personal ambassador and adopted Prince of Red London, carrying the monthly correspondences between royals of each London. Unofficially, Kell smuggles for those willing to pay for even a glimpse of a world they’ll never see. This dangerous hobby sets him up for accidental treason. Fleeing into Grey London, Kell runs afoul of Delilah Bard, a cut-purse with lofty aspirations. She robs him, saves him from a dangerous enemy, then forces him to another world for her 'proper adventure'.
But perilous magic is afoot, and treachery lurks at every turn. To save all of the worlds, Kell and Lila will first need to stay alive—trickier than they hoped.(x)

My review:
I saw the reviews and praise for this book so I added it to my TBR pile. I finally got this book in my hands and I could not put it down. The worlds and the characters sucked me in. I cannot wait to read the sequels. One of the very few good books I have read this year. This book is deserving of all the praise and is one I would read again.
What I liked.:
First off the world building. I thought the worlds were well built and thought out which made the story even more gripping. The two different londons' and how the plot shifted through both made me like how the plot progress. The characters especially Kell were well written and I liked them. The characters enhanced the book. The plot was not too far fetched and was not predictable. I like how the story progressed and how the author paced the novel.
What I did not like:
Not much, The only thing I did not like was the book ended because I did not want it to end.
Verdict:
Everyone needs to read this book. It is awesome and well worth a read.