IONA MCGUIRE. To the denizens of Thunder Ridge, a ski resort in the Colorado Rocky Mountains, she is the eccentric, reclusive heiress to an international conglomerate. But unsuspected by them, she is a powerful sorceress. Throughout centuries in its native Scotland, the Clan McGuire had garnered respect, admiration, and fear. Clansmen's participation in the Crusades and internal Scottish wars gained the Clan great wealth. However, in the intensely Christian country, rumors of an alliance between the Clan and forces of the underworld fueled dangerous speculation about the source of the Clan's...