Oksana Grigorieva to Bash Mel Gibson on Oprah

Oksana Grigorieva wasn't kidding about a PR offensive.

Oprah Winfrey has landed a coveted TV interview with Mel Gibson's estranged source of baby mama drama and domestic abuse allegations, edging out 60 Minutes.

Winfrey's production company, Harpo, apparently struck a deal with Team Oksana on Tuesday. There's no telling what the nut job will say on the popular program.

"Oksana has a very powerful story to share, from emigrating to the United States from Russia, her marriage with Timothy Dalton, her music career and a volatile relationship with Mel Gibson," an insider says, regarding the upcoming Oprah interview.

Let's be honest with ourselves here. Yes, Mel Gibson is a jackass and bona fide lunatic who should be locked up if he really did any of the things Oksana alleges.

But this woman is no saint herself. Quite the contrary, in fact.

In addition to the domestic violence investigation of Gibson, police are also probing Oksana to determine if she's guilty of extortion. Criminal or not, she is shady.

Asked by paparazzi about the Oprah sit-down, Grigorieva said she couldn't talk about it, adding "the truth will come out" regarding her relationship with Gibson.

The Mel Gibson rants have already come out, though, and while they are vile and deeply disturbing, they don't mean she's not trumping up the violence claims.

Nor do they mean she's a victim, or at least the only one. It's clear she was on the cusp of securing millions to destroy the tapes ... which she may have leaked.

She adds that she's "never been afraid of extortion charges, because there are none." Not yet anyway. Give it a couple of weeks and then check with the cops.

Thoughts?