He declined to provide hundreds of text messages, sought by the NCAA investigators, linking the Louisville assistant and the accuser, have been erased because of a virus.
Not to worry though, he hired forensic investigators who confirmed the authenticity of the texts and emails. The publisher also declined to release any journals and encouraged the NCAA to read the book.

Author: Take my word for it that the evidence did exist but has since vanished.

Publisher: We have the proof to back the claims. Just read the book and take our word that proof exists.

http://www.sportingnews.com/ncaa-basketball/story/2015-10-06/louisville-sex-scandal-book-andre-mcgee-rick-pitino-katina-powell