guilty or innocent...

I have read many, many books by James Patterson and "Guilty Wives" was very good.  Four friends go away together to Monte Carlo for a much-needed girls weekend.  While they are away the unspeakable happens, two men are shot and they four women are arrested and go to jail.  One of the women, Abbie, refuses to give in and confess to a crime she didn't commit and spends her days trying to figure out how to get to the truth.  There are twists I did not see coming and really liked the ending too...