As a book, overall, it wasn't terrible. I can't say it was overly fantastic and I also can't say it was terrible...I didn't love it, I didn't hate it. 
 I felt like there were quite a few contradictions in the plot/story line. The girl who disappeared when she was 12 was supposedly mature for her age- even if she held things close to the vest and kept secrets. She was also a somewhat loner with only a few friends. She had grown up in a house with two parents who loved her and cared about her. I guess for those reasons it's hard for me to understand why (view spoiler)[ she would get into a car with an older guy who is supposedly ugly and grubby looking...and then after getting in the car with him, going to his house with him once he suggests it. (hide spoiler)] I'm not trying to say the crime is her fault, just that it makes little sense to me why she made the decisions she made if she is mature for her age...most 12 year olds would know better, and a mature 12 year old most certainly would know better- at least that's how I see things...and I was once a 12 year old who was considered mature for her age. 
 On top of that, I don't understand the actions her father takes, and I can't relate to her mother either. (view spoiler)[ I can't fathom how a mother whose child has been missing for 4 years and has now been found wouldn't want to get to where her child is as fast as humanly possible...it almost seems like she doesn't want to see her in my opinion...like it is going to be too hard on herself. I know my reaction as a mother would be to get to my kid as fast as possible. Her reaction seems unnatural and very odd to me. On the other hand, her father's reactions seem more accurate until towards the end of the book...he actually goes to the guy who had kept his daughter for 4 years and has a conversation with him...a flipping CONVERSATION!!!...is this author serious?!? Not only that, he then makes a deal with his daughter that he will let her go back with the guy if she will just tell him what happened during the time she was away...like his need to know what happened is more important than knowing his little girl is safe...doesn't matter to me if she is 16 or not, she is still his child! NO FATHER I KNOW WOULD MAKE A DEAL LIKE THIS!! GET REAL!! (hide spoiler)] 
 So yeah, I had some issues with the believability of this book. That's the reason for my rating that says it was just okay. Because that's all it was, just okay.