The Lady Has Plans (1942)

Some dastardly criminals have stolen some top secret plans and tattoo them on the back of a woman so she can sell them to the highest bidder in Lisbon This woman plans to take the place of a Sidney Royce a legitimate traveler going to Lisbon as a reporter Crossed signals allows the real Sidney to reach Portugal first where she is pursued by those trying to obtain the plans and US government agents trying to prevent the sale