Actual Rating: 3.5 
 This book is great for a light read. No heavy stuff. I didn't have to think much and it was easy to follow. The chapters are short and one can read fast for writing style. 
 The first thing I loved about this book is the new writing style. Maybe it's not that new. But I am reading this kind of interview style and journal entry form for the first time. This whole book is written in this style. It's witty, to the point and not boring at all. Also the interviews are informal so there are emotions involved where necessary (I was bit suspicious that this kind of presentation might lack proper emotions at places). 
 In the beginning there's not much happening. They are just discovering body parts, training with it, doing experiments. Very routine work. Sometimes there are little progress, sometimes no progress at all. Basically in this part you are going to get to know the characters. What I mean is it is not that thrilling but it was nice to read anyway. And I would not have any problem if the whole story was going like this which didn't. When I was enjoying reading about them and their experiments suddenly there was an accident and things changed. After that there are just little progress and more accidents. And after each accident I have to put the book down for some time because I got attached with the characters and the experiment and when something goes wrong it really pains me. 
 Near the end things got really messy. It became more like thriller and less like a scifi. Or so I felt. I don't think I can explain it properly. The problems were not about the 'big discovery' anymore. It was more about the people working on the project. I was expecting it to be more about the 'big discovery'. Anyways, it was not expected but enjoyable. 
 Lastly, I loved the characters. Rose, Vincent, Kara, unnamed interviewer. I am a sucker for bossy, badass, witty people. They were the combinations of those. It was very easy for me to connect with them and root for them. 
 Oh! And lets not forget. There is a big and mighty cliffhanger. Though I was expecting something like this halfheartedly and when this finally happens I cannot wait to know what happens next. So I am going to start the next book pretty soon.