A few years ago, Michael Finkel's journalism career was as dead as yesterday's newspaper because he had lied in an article for the New York Times Magazine. Today, the 36-year-old Bozeman, Mont., resident has banked a half- million dollar advance on his first book, sold its film rights to Brad Pitt's production company and has a year-old marriage with a baby on the way. What made the difference? The fact that a young, clean-cut father in Oregon murdered his wife and three young children, dumped their bodies in the water and then went on the lam to Mexico, using as...