Too heavy on sleep-inducing South American flora-fauna and geography lessons. Really doesn't rate with what we've come to expect from Grisham. I wound up skimming the last ten-or-so chapters.
Also, the novel is excessively heavy on matters of what we generally describe as faith. He seems to assume, in the way he tells the yarn, that the reader shares what I take to be his own religious beliefs.
Actually, I might better have entitled this review, "Grisham Finds Jesus in Jungles of Brazil."