A Highland ChristmasIn dark, wintry Lochdubh, Christmas cheer is about as welcome as a flat tyre on a deserted road. The Calvinist element in town has always resisted what they view as secular frivolity, so for most of the townsfolk there'll be no carols, feasting, gifts or even whisky on Christmas Day! And for PC Hamish Macbeth, there's no holiday from crime. He finds himself hunting for a missing cat belonging to a lonely spinster. Curt and unfriendly, the woman is