The denial of the Holocaust has no more credibility than the assertion that the earth is flat. Yet it is a sad testament to our time that those who make such claims are no longer dismissed as members of the lunatic fringe but are gaining a hearing in respectable arenas. In this first full-scale history of Holocaust denial, the author shows how, despite tens of thousands of living witnesses and vast amounts of documentary evidence, this irrational idea has not only continued to gain adherents but has become an internationally organized movement. Exploring the roots and meaning of this disturbing development, the author argues that this chilling attack on the factual record not only threatens Jews but could dramatically alter the way that truth and meaning are transmitted from one generation to another.