The film later revealed that Cruise portrays Digger Rockwell, an oil magnate who has a direct ear to the US president. This detail, along with many other story elements, was kept under lock and key by director Iñárritu until just weeks before the movie’s release.

Australian actress Sophie Wilde, who was cast as a key supporting character, said the secrecy was a daily challenge. "I haven't been able to say anything. It's stressful keeping the secret of the film," she told ABC News, adding that the mystery was also exciting.

Wilde is a graduate of the Australian National Institute of Dramatic Arts and first gained international attention starring in the horror film Talk To Me. Her rapid rise makes the pressure of a high‑profile, tightly guarded project even more intense.

The strict embargo shows how blockbuster productions can create a tense environment for actors. When every line and scene is hidden, performers must balance excitement with the anxiety of not being able to discuss their work publicly.