Evans is probably best known to the general public in the role of an expert witness for the defence in the high-profile libel case of David Irving against the American historian Deborah Lipstadt in 2000, "Irving v Penguin Books and Lipstadt". Lipstadt was sued for libel by Irving, after she referred to him as a "Holocaust denier" and "an ardent follower of Adolf Hitler" in her 1993 book "Denying the Holocaust". Lipstadt further accused Irving of "distorting evidence and manipulating documents to serve his own purposes...[as well as] skewing documents and misrepresenting data in order to reach historically untenable conclusions, particularly those that exonerate Hitler."