Am i the only one who got Kerstin Gier's Ruby Red series feels from this book? I was literally imagining each an every scenario like of the latter. Though I've only watched the movie. Not read the book. 
 Well for me this was typical YA novel but something within made me give it a 4 star. Maybe cuz it reminded me of Gwen and Gideon (of Ruby red) and I absolutely loved them (at least the movie duo). For the most part I liked the characters. Most importantly I loved the background of having it in Russia. The more fun part I mean. And many references of London was nice too cuz I kept getting flashbacks of the places I visited last time I've been there. This book made me definitely go to Russia. So yeah this book is like a travel guide to me. Making me want to go to places -.- 
 I managed to actually (surprisingly) find this at our Comic Con so I wouldn't bet my chances of finding the second book anytime soon in Sri Lanka. Most probably I would even forget about this by the time I find the second book. 
 On the side note, for those who haven't watched the Ruby Red Series, give it a chance. It's once again your typical YA film but I liked the premise of it. It's German but obviously you can watch it with Eng subs somewhere. 
 Please don't get distracted by the typical Disney channel-like look of the posters. Just give it a chance