I noticed reading other reviews that the one that gave SATURDAY a one or two star review said for one reason or another that they "could" not or did not finish the book. I can see why they did not see the greatness of the book in that circumstance.
I have never read a book like this before now. It was eighty percent developing the characters and twenty percent plot. That is exactly why it works so well. The time spent on development of the people in the story really makes the plot payoff.