Dylan O'Brien Promotes 'American Assassin' In London

Dylan O’Brien rocks a plaid shirt while heading into a studio on Saturday (August 19) in London, England.

The 24-year-old actor went to BBC Radio studios to promote his upcoming film American Assassin.

The day before, the brand new character posters were revealed, exclusively on JustJared. Be sure to check them out!

Dylan recently opened up prepping for his role in the film.

“We relied heavily on the Former Navy SEALs and other military experts who taught us everything. They make it each step more real…Your respect grows every day for the people who serve [in the military] in this kind of capacity in real life,” Dylan explained.