Jonathan Groff has joined the cast of the upcoming Vietnam War thriller "Trust the Man," starring alongside Daniel Radcliffe.

The pairing marks a high-profile reunion for the two actors, who previously worked together in the Broadway revival of "Merrily We Roll Along." Their combined star power provides a significant boost to the production's visibility as it moves toward filming.

Written and directed by Will Graham, the film is a thriller set against the backdrop of the Vietnam War. The project was first announced in February 2026 [1] ahead of the European Film Market. This latest casting update follows that initial reveal, with the official announcement of Groff's involvement arriving this week [2].

The production seeks to blend the tension of the thriller genre with the historical complexities of the conflict in Vietnam. While specific plot details remain under wraps, the casting of Groff and Radcliffe suggests a focus on the interpersonal dynamics between the lead characters, a theme that defined their previous theatrical collaboration.

Industry observers said that the timing of the announcement aligns with the film's development cycle following its February 2026 [1] debut at the European Film Market. The project continues to build its ensemble under Graham's direction, aiming to capture the psychological strain of wartime service.

“Jonathan Groff has joined the cast of the upcoming Vietnam War thriller Trust the Man”

The reunion of Groff and Radcliffe leverages a proven creative chemistry from the stage to attract audiences to a historical thriller. By anchoring a Vietnam War narrative with two versatile actors known for both musical and dramatic roles, the production increases its commercial appeal and potential for critical crossover success.