New Delhi, May 29 -- Kevin Costner has been sued by a 34-year-old stunt performer for allegedly subjecting her to an unscripted rape scene without proper warning, consent or protocols while shooting his film Horizon: An American Saga: Chapter 2.

The victim, Devyn LaBella, filed the lawsuit in Los Angeles Superior Court and named Costner - the director, star and co-writer of the "Horizon" series of Westerns - and its production companies as defendants.

In the lawsuit, she alleged that the impact of the impromptu scene has been profound, which not only upended the career she spent years building, but also left her with permanent trauma that she will be required to address for years to come.

However, Costner's attorney said the lawsuit ha...