“Truth,” the James Vanderbilt film that stars Robert Redford and Cate Blanchett in the behind-the-scenes story of Dan Rather’s last days at CBS, will open the 2015 Hamptons International Film Festival, which also has set the lineup for its narrative and documentary competition films.

In “Truth,” Redford plays Rather and Blanchett appears as CBS News producer Mary Mapes, upon whose memoir the film is based. Topher Grace, Elisabeth Moss and Dennis Quaid are also among the cast of the movie, which premieres at the Toronto Film Festival ahead of its Oct. 8 screening at HIFF. The Sony Pictures Classics movie is due for theatrical release Oct. 16.

The festival also announced the 10 films that make up the competition slates, with five titles apiece set for the narrative and documentary categories. The 2015 edition of HIFF, the 23rd annual outing for the fest, runs Oct. 8-12.