Born Hedwig Kiesler in Vienna in 1914, Hedy Lamarr became the star of the most controversial film in the world while only a teenager. She escaped her abusive arms dealer husband and came to America, where she became one of the most famous actresses in the world. However, her acting career was only a very small part of her legacy, as her inventive mind, working with composer George Antheil, developed the groundwork for modern communication systems.

Wing Commander Lionel Cohen, better known by his nickname Sos, was a man addicted to adventure. He joined the military and traveled to Africa while just a teenager. He worked as a miner, spy, stockbroker, pilot, cavalry officer, security guard, and more. He fought in four wars for several different armies.

The von Stauffenberg family, a Swabian aristocratic lineage, produced two of the most remarkable figures of the German resistance: Colonel Claus von Stauffenberg and his sister-in-law, Melitta von Stauffenberg, nee Schiller. While Claus became the primary architect of the military resistance, utilizing his high-ranking position within the Wehrmacht to coordinate Operation Valkyrie, Melitta occupied a unique and precarious position as one of Germany’s most elite aeronautical engineers and test pilots, despite her Jewish heritage. Both were driven by a profound sense of duty that eventually placed them at the center of the Nazi party's most dangerous internal struggles.