EDIT 11/22/2015: 
 The more I think about it, the writing in this book was very sloppy. True, I really wanted to know what the "big secret" was, but the writing wasn't very suspenseful at all. When I pick up a thriller, I want suspense. This book didn't have much. Lowering my rating to 3 stars. 
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 Well, I can safely say this was not what I was expecting. Going by the blurb, I was expecting a spooky supernatural thriller. I can safely say, that my expectations were both shattered and exceeded in one fell swoop. 
 This mystery/thriller is my first read from the author. This tale is spun with such clever threads that after finishing the story, and stepping back to finally see the full picture, I was astounded at what they all came together to create. The mystery elements kept me guessing until the very last sentence, and the big reveals were just as surprising to me as they were to the characters. 
 However, this well-crafted mystery/thriller loses a star for some rather distracting problems along the way: 
 Typos 
 - I don't know anything about publishing in the UK, but there were some very frustrating typos littering this whole story (especially towards the end). Some examples include; 
 "Yes, I need to talk to about..." 
 "Laura's eyed widened with surprise." 
 "She touched me face. [No, this pronoun is not used this way anywhere in the book. It's told through first person, and Daniel never refers to himself in this way. He uses 'my' in all other sentences like this] 
 And, as this is told though Daniel's POV, this is the most jaw-dropping typo I came across in this novel: 
 "Come On" Edward said, leading Daniel to the rear of the ambulance. 
 I understand the chapters focusing on Laura are in the third person, but this line comes right in the middle of one of Daniel's chapters. It completely through me for a loop that this mistake was missed. 
 ~~~ 
 Aside from the frequent typos (I'm only showing a few, there were a lot) this was a very enjoyable read. The plot had me invested, and I found the characters realistic enough to sympathize with. 
 Personally, I didn't find the writing style itself to be anything spectacular (another reason it's four stars instead of five). Maybe it's just my tastes, but I prefer writing with a bit more sensory detail. This book had that, but only when it was focusing on the most disturbing aspects of its story (which, I will warn, are very graphic). However, I really enjoyed those scenes because of the vivid writing, so it's not a huge dislike. At times, the imagery was very theatrical, which is always a big plus for me. 
 If you're looking for something supernatural, I think you'll enjoy this book well enough; but might not end up with what you were expecting. In this case, however, I don't see that as a bad thing.