I picked this book up at the South American Explorers Club headquarters in Cuzco. I had seen the movie with Danny DeVito many times (it was one of my favorites in early high school), but I never knew it was based on a book.
I couldn't help but like it because I liked the movie so much, but it is a bit different. The movie cleaned the book up in more than one way. First, Jack's father smokes weed in the book and Jack does a little experimentation of his own that was completely left out of the movie. Second, the movie gives a little more focus than to the turmoil and traumatic events that occur in the book; the movie's villain, although clearly mentally unstable, is primarily a hateful and very racist man. This makes his actions believable. The novel's version of the same man is not so neatly packaged. He has motives of sorts, but he is also psychotic, so his reasoning does not always make sense.
It's a very fast read, and although I wasn't completely sold on the narrative style, I had fun with it. I always enjoy discovering where films or tv shows that I really enjoy came from.