Just as I didn't assign a star rating to A Stolen Life, by Jaycee Dugard, I can't assign a star rating to this book.
However, I felt that while it was informative, it was not well-written. Certain events in the book seemed out of order, like they should have been discussed either earlier or later on. Additionally, some things were mentioned several times, which I found repetitive and unnecessary.
I also found an error towards the end of the book (unfortunately, I no longer have it and forgot to write down the page number). I did type up the sentence in which I found the error: "On Monday, November 12, 2007, the prosecution team completed it's charges; Josef Fritzl was to be tried for the crimes of murder, slavery, rape, deprivation of liberty, coercion, and incest." The date shouldn't be 2007. Elisabeth and her children didn't get out of the cellar until 2008, so there couldn't have been a prosecution team against Fritzl in 2007. I'm guessing it was supposed to be 2008. It's not a huge error, I guess, but it does make me wonder if the author made any mistakes that really matter somewhere else.