IT'S SO COLD THAT THE FLASHERS IN DOWNTOWN ST. PAUL ARE ONLY SHOWING PICTURES OF THEMSELVES when newspaper reporter Warren "Mitch" Mitchell and photographer Alan Jeffrey are called out to cover the discovery of the frozen body of a young woman The victim is a former St. Paul Winter Carnival performer who played the role of saloon singer Klondike Kate. She was last seen leaving a bar with what appeared to be a member of the Winter Carnival's Vulcan Krewe, throwing suspicion on the entire eight-man group.  Mitch and Al ride with Vulcanus Rex and his Krewe on the coldest day of the year and the Winter Carnival threatens to explode over the possibility that a Vulcan could be the killer. The only thing keeping Mitch warm is the sultry brunette coordinator of the Klondike Kates, who wears red boots and a come-hither look. When at last he confronts the killer, the tables are turned and bullets fly in one of St. Paul's finest hotels.