For Mr. and Mrs. North, there's no vacation from murder In a remote cabin far from New York City, Jerry and Pamela North are getting killed. On the brink of annihilation, they grit their teeth and battle back. In a minute, the fight is finished--and the Norths are named mixed doubles champions. It's a happy moment during a splendid vacation, but off the tennis court, all is not well. After an afternoon of fun and games, the...