Actresses Rooney Mara and Kate Mara learn to speak in unison for Werner Herzog’s new drama “Bucking Fastard.” In the film, they portray sisters who communicate together as a pair, with their characters described as sharing the same dreams and romantic interest.

Variety reports that the sisters find the coordination largely natural, describing the process as happening “quite naturally” and noting it was “surprisingly” easy. The Independent likewise highlights that the requirement is central to the casting and performance approach, emphasizing that the film’s premise involves siblings who speak in unison. Both outlets frame the “speaking together” element as a key feature of the story rather than a gimmick, reflecting Herzog’s interest in distinctive characterization.

Together, the sources present the same core point: Rooney and Kate Mara must deliver lines in a synchronized manner for the film, and accounts from the actors characterize the learning process as smooth and straightforward.