I really enjoyed this book! I've read Claudia Gray's past books, the Evernight series, so I was looking forward to reading her new series since it was going to be in another genre and wanted to see how it was going to turn and all I can is that I honestly loved it! 
 I'm just going to go ahead and say that I think that A Thousand Pieces of You is definitely one of her best works yet. Sure, I might be biased since I love everything about time and space travel or different dimensions/universe and this book reminded so much of Broken Symmetry by Dan Rix since it also dealt with alternate universes. But that's where the similarities end. This book basically switched things up a bit and had the characters actually inhibit their selves from that universe (basically it was like they were in that body and could control it and stuff). Apart from all that, it was nice to see the Russian influence throughout the book, starting with the whole Marguerite jumping to a universe where she lived in a Russian monarchy. Ever since I read Leigh Bardugo's Grisha Trilogy, I've been a huge fan of Russian things and Russia in general so suffice it to say that I really enjoyed this book! 
 I admit the things that confused me at times where the jargon used, those concepts about traveling were hard to follow sometimes. Not to mention the few times physics concepts were mentioned were also something that I got confused at (and I'm in a college physics class at the moment!). Either way, the characters, the premise, and just the whole book was awesome. It had elements of action, and just enough mystery/suspense that kept me on edge wondering what was going to happen next, who was the real culprit and what was actually going on with Paul and Theo and Conley/Triad. 
 I would actually talk more on the romance front but since it's so complicated and spoilery, I won't! Just know that i got really annoyed with Marguerite a few times, but near the end she sort of made up for it but since these books are going to be a trilogy, I look forward to reading about Marguerite and Paul and Theo!