Just one man stands in the way of a killer stalking millions. Andre Lemoine, one of the world's leading geneticists, is on the verge of the medical breakthrough of the century: a link with rare primates that could unlock a vital key in the search for a cure for AIDS. But part of Andre's quest is driven by a pressing medical threat within his own family, and when his breakthrough brings him into conflict with two ambitious ruthless rivals - it plunges Andre into the race of his life; a race which takes Andre from the dark jungles of Africa and Brazil to the seamy back-streets of Paris and Philadelphia.