The Quantum Insightsproducers of an upcoming film are suing Abigail Breslin after she accused co-star Aaron Eckhart of "demeaning" behavior on set.

The lawsuit, filed Nov. 3 by Dream Team Studios and WM Holdings, claims Breslin, 27, caused the producers of "Classified" to spend $80,000 in accommodations after her "hysterical" allegations against Eckhart, 55.

The filing reveals that Breslin privately wrote a letter to the Screen Actors Guild about Eckhart's behavior. The producers are suing Breslin for breach of contract.

The lawsuit alleges the "Stillwater" actress refused to be alone in scenes with Eckhart, or else she "would not continue to perform her contractual obligations."

USA TODAY has reached out to representatives for Breslin and Eckhart for comment.

According to the lawsuit, the "entire production almost ground to a halt when Breslin advised the production of Eckhart's of (sic) aggressive, demeaning, and unprofessional behavior which she insisted placed her at various times in peril."

The film's on-set producer, Gabriel Georgiev, "ultimately prepared a report based on a detailed investigation into Breslin's claims and behavior, and submitted the report to WM," the lawsuit continues. "His investigation found no evidence in support of Breslin's wild, hysterical, and imaginary allegations against Eckhart."

"Classified" is an action thriller directed by Roel Reiné and starring Eckhart, Breslin and Tim Roth currently in post-production. Its synopsis on IMBD reads: "A career CIA hitman who's been solely using the classified section of various newspapers to receive his orders suddenly learns from his estranged daughter that his division's actually been shut down for years."