Rooney Mara will replace Carey Mulligan in Spike Jonze's latest film.

The Girl With The Dragon Tattoo actress is set to take a role in the untitled drama, which Carey dropped out of citing "scheduling conflicts," and although details have been kept a secret it will feature a man who falls in love with the voice of a computer. It is also thought to include scientists gathering to discuss catastrophic events.

Joaquin Phoenix, Amy Adams and Samantha Morton will all star in the project although it is unclear which parts everyone will play.