Orlando Bloom and Domhnall Gleeson also star in this mock-Irish fable about siblings whose hunger for love compels them to tunnel through a mountain.

Sisters Rooney and Kate Mara learned to speak in unison for Werner Herzog's "Bucking Fastard," something that came "surprisingly" easily for them.

Kate and Rooney Mara, who play sisters with a deep and spooky bond in the German's new film, joined the director for a press conference with co-stars Domhnall Gleeson and Orlando…