A Nazi spy ring is after a formula to boost the power of gasoline for U.S. Army aviation. Two companies are developing it, with each working on half for security. The spies capture one chemist, Tom Fielding, and threaten his loved ones if he doesn't reveal the rest of the formula.
The Dawn Express
In the midst of World War II, a clandestine Nazi mission aimed to steal the formula for synthetic oil from the United States, with the goal of transporting it back to Germany on a secret nighttime flight.