Footprints of God By GREG Iles?

I came across a book called Footprints of God by Greg Iles. Can someone give me a COMPLETE summary of the novel? Including the ending? I just want to know what happens and what it is about. I would read it, but I have too many other books to read for my summer cles as well as for a movie I'm hoping to film soon. Thanks in advance for your help because I'm dying to know what this is about.