A stunt performer on the set of “Horizon: An American Saga – Chapter 2,” is suing actor-director Kevin Costner and the film’s producers for what she says was “a violent unscripted, unscheduled rape scene.”

The lawsuit, filed by Devyn LaBella, alleges that the stunt double was called in after actress Ella Hunt refused to participate in the improvised scene on May 2, 2023.

After Hunt reviewed the sudden script change, the lawsuit says she “became visibly upset and walked off set,” prompting Costner to ask LaBella, who was unaware of Hunt’s departure, to “stand in” for the actress.

“In complete ignorance of the nature of the ‘shot,’ she agreed to help,” the suit reads. ”[Ms. LaBella] was not warned or prepared for [the male actor] to perform or engage in any action on top of her and first learned that [he] would mount her and violently pull her skirt up when he was already on top of her doing so.”

In violation of SAG-AFTRA rules, the filing says an intimacy coordinator was not present, nor was the set closed, nor was LaBella given at least 48 hours’ notice to review and consent to the scene.