His only companion on this hellish journey detests all humanity, including Tayler. Vadim, Tayler's guide, is a burly Soviet army veteran whose superb skills Tayler needs to survive. As the two navigate roiling white water in howling storms, they eschew lifejackets because the frigid water would kill them before they could swim to shore. Though Tayler has trekked by camel through the Sahara and canoed down the Congo during the revolt against Mobutu, he has never felt as threatened as he does on this trip.