With a script by playwright David Hare based on Deborah E. Lipstadt’s nonfiction book about Holocaust deniers, Mick Jackson’s upcoming drama called, appropriately enough, Denial, promised fireworks from the get-go. This new trailer doesn’t back away, opening with a scene in which denier David Irving (Timothy Spall), lobs the first verbal grenade: “I say to you, quite tastelessly, that more women died on the backseat of Senator Edward Kennedy’s car at Chappaquiddick than ever died in a gas chamber at Auschwitz.”

The appalling claim sets the serious tone for Denial, based on Lipstadt’s book History on Trial: My Day in Court with a Holocaust Denier, a chronicle of the author’s legal battles in Britain after being sued for libel by Irving. In the film, Rachel Weisz plays Lipstadt, who, due to the intricacies of the British legal system, essentially must prove in court that the Holocaust — specifically, Auschwitz’s gas chambers — existed.

The film also stars Tom Wilkinson. Producers are Gary Foster and Russ Krasnoff. Bleecker Street plans a September 30 limited release.

In addition to the trailer, Bleecker has released the first-look photo of Weisz with author Lipstadt on the film’s set. See it above.