Charlie Sheen fired back at Capri Anderson in lawsuit that alleges she tried to extort $1 million from him after their "consensual encounter" in a New York hotel room.

"This case involves a shakedown and extortion of the internationally known actor and celebrity Charlie Sheen … by an opportunist pornographic film star and publicity-hungry scam artist," says the lawsuit filed Monday in Los Angeles Superior Court.

Anderson, an adult film actress whose real name is Christina Walsh, "fabricated a sensational tale about being assaulted, battered and held against will" and then threatened to go to the media with "her false tale" if the Two and a Half Men star didn't pay up, the lawsuit says.

When Sheen "refused to succumb to Walsh's extortionate and illegal demands," her representatives contacted the Aspen authorities who prosecuted Sheen in a domestic violence case and gave an interview that aired Monday to ABC News.

Walsh told ABC that she had been hired to escort Sheen to dinner last month but the night ended with Sheen turning violent and Walsh locked in the bathroom in fear for her life.

Sheen's lawsuit alleges that Walsh told somebody else that the assault never occurred and told New York police that the actor acted "like a total gentleman."

Denies Extortion

Keith M Davidson, an attorney for Walsh, says the extortion attempt "never happened."

"It's a blatant attempt by them to muddy the waters and confuse the situation," he tells DIDNTINVITEME. "They are throwing a bunch of mud at the wall and hoping something will stick."

As for whether Walsh called Sheen a "gentlemen" to police, Davidson says, "At the beginning of the night he was acting as a gentleman, but not at the end when he was threatening to kill her."