HBO has released a chilling full trailer for The Girl starring Sienna Miller as Tippi Hedren and Toby Jones as Alfred Hitchcock. Written by Gwyneth Hughes, The Girl looks at Hedren and Hitchcock's on-set relationship during the filming of The Birds. As we reported, during the HBO TCA panel for the film, Tippi Hedren openly discussed how Hitchcock sexually harassed her. The Girl will premiere on HBO on October 20th. This is not one to miss.