Forget morality tales and all the fury and mire of human complexity, and follow the money. It will lead you through urban legends about sex and revenge and jealousy and the acquisition of power over others, but ultimately, it will lead you to the issue from which all the other motivations derive--money, piles of it, green and lovely and cascading like leaves out of a beneficent sky, money and money and money, the one item that human beings will go to any lengths to acquire.