If you are or ever have been married, chances are you have one-or maybe even more than one. And if you're about to be one, your hope is to be a good one. So, what is this "one"? Actually, it's a "who." According to recent studies, this person contributes tension to approximately sixty percent of all marriages. Some label her fearsome, loathsome, conniving, interfering, the monster-of-all-monsters. Others claim she is a sweet, second mother. But more realistically, she is most often just a person somewhere between the two extremes. She is-THE MOTHER-IN-LAW. His Mother is not a self-help book...