There was nothing unusual about that pleasant Wednesday morning. Henry and Martha Pickett, owners of a large rental house in Seattle had nothing planned. It was nine-thirty, Henry was out walking the dog, and Martha was sorting the day's mail; a utility bill, circulars read and disposed of, and then the letter. It was from Big Eye, Montana, home of Henry's twin brother, Homer. Martha was concerned; the twins are not letter writers, they keep in touch with infrequent phone calls and the annual Christmas card. The letter triggers a phone call, the phone call delivers a message that turns Henry...