Kate Mara, Finn Wittrock, Justice Smith and Victor Garber join cast of Vietnam War thriller “Trust the Man,” Deadline reports

Writer-director Will Graham has wrapped on his Vietnam War thriller “Trust the Man,” and the film has added several cast members in its final lineup, according to Deadline. The movie, which stars Daniel Radcliffe and Jonathan Groff, is scheduled to expand beyond its previously announced leads as production prepares to move into post-production.

Deadline reports that the additional cast will include Kate Mara, Finn Wittrock, Justice Smith and Victor Garber. The report also lists Angus O’Brien and Jack Ball among the final additions, completing the most recent casting expansion around the film’s central ensemble.

“Trust the Man” is described by Deadline as a Vietnam War thriller. Beyond the project’s setting and genre, the report does not provide further detail in the supplied text about character names, plot specifics, or the timeline for release, leaving those items to be confirmed as production information becomes public.

The casting changes follow the pattern typical of mid-to-late stage film development, where additional roles are filled after the core leads have been set. With Graham said to have wrapped on the production, the project’s focus is expected to shift toward finishing work off set, including editing and other post-production steps, though Deadline’s supplied material does not specify schedules or production milestones.

Deadline’s report positions Mara, Wittrock, Smith and Garber as among the key additions alongside O’Brien and Ball, indicating the film is assembling a roster of recognizable screen performers for its Vietnam War setting. The inclusion of multiple established actors can also affect production planning for logistics tied to shooting schedules, contract approvals, and scene sequencing, particularly once a project is near the end of principal photography.

No additional studio, distribution plan, or production company details are included in the supplied Deadline text. As a result, it is not confirmed from the record here how the film will be marketed, where it will screen first, or whether casting names will be further expanded before release.

As “Trust the Man” moves beyond production, the next publicly verifiable developments will likely involve confirmation of release timing and additional creative credits, along with any details on the roles each new cast member will play. Until those items are announced, the record supports only that Graham has wrapped and that these actors are now set to appear, alongside Radcliffe and Groff, in the Vietnam War thriller.