The 39 Steps (2008)

Richard Hannay, a mining engineer seeking excitement in London, quickly finds himself embroiled in a thrilling adventure. His mundane holiday takes a dramatic turn when a secret agent seeks refuge in his room, handing over a mysterious coded notebook tied to the looming threat of World War I. Suddenly, Hannay is on the run, pursued by both German spies and British authorities, all desperate to seize the crucial Roman numeral code. With danger closing in, he must decode the message and navigate a treacherous landscape of intrigue and betrayal to uncover the truth.