Oksana Grigorieva's rogue bodyguard who later became a Mel Gibson informant has used his tell-all book to detail how he allegedly made love to the Russian musician, who he breathlessly called 'The Sexual Sorceress'.

Kristian Herzog, who was fired as Grigorieva's personal protection after it emerged he was a twice-convicted felon who impersonated a cop with a loaded firearm, is touting the expose as "the true Hollywood story" of the Oscar-winner's romance with his ex-lover.

"Everyone went from hero to zero in less than 60 seconds," Herzog wrote, in a preview of the book he gave exclusively to RadarOnline.com.