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.

Oksana Grigorieva’s former bodyguard, Kristian Herzog has completed a no holds barred tell-all book about his ex-employer and her explosive relationship with Mel Gibson.

Herzog is now hoping he can land a book deal, and is shopping around his rough draft, RadarOnline.com can exclusively report.

The convicted criminal, who was once accused of impersonating a police officer, began working with Oksana during a particularly turbulent time in her life - shortly after the January 6th alleged beating that she claims she suffered at the hands of Gibson.

Mel Gibson wanted Oksana Grigorieva's bodyguard murdered, according to the man's last will and testament - an extraordinary and bizarre document that RadarOnline.com has uncovered.

EXCLUSIVE DOCUMENT: Kristian Herzog's Last Will And Testament

The astonishing and unbelievable claims were made by Kristian Herzog - a twice-convicted felon who once impersonated a cop with a loaded gun - in an email he sent to Grigorieva on September 17.

Photos of a scantily-dressed Oksana Grigorieva sitting on the edge of a bed with her arm supposedly around her sacked bodyguard are fake, her closest advisors are telling RadarOnline.com.

One gossip Web site published the photos of Kristian Herzog, a twice-convicted felon who impersonated a cop with a loaded firearm, sitting next to the Russian musician, 40, who is wearing her nightgown.

PHOTOS: Mel & Oksana In Happier Times

The bodyguard who claimed to have had a sexual relationship with Oksana Grigorieva made a similar claim about Tila Tequila, and even boasted he got the reality TV star pregnant, RadarOnline.com has exclusively learned.

Kristian Herzog is reportedly telling friends he was "very intimate" with Grigorieva, the single mother-of-two who is embroiled in a bitter court battle with Oscar winner Mel Gibson.

PHOTOS: Oksana Grigorieva Has A Mother-Son Movie Date

Oksana Grigorieva denies ever having an intimate relationship with her bodyguard, RadarOnline.com is exclusively reporting.

Oksana has told a close friend: “It is a lie... I have never had sex with this man.”

PHOTOS: Oksana Grigorieva Has A Mother-Son Movie Date

Kristian Herzog, a convicted felon who once impersonated a cop with a loaded gun, has reportedly claimed he was “very intimate” with the Russian musician, 40.