The debonair sleuth sets out to foil enemy agents planning to assassinate a South American diplomat. However, his mission is cut short when he suffers a terrible accident, and it is left to his equally courageous brother to complete the investigation and take on the role of the Falcon. George Sanders stars, handing over crime-busting duties to Tom Conway.

A gentlemanly detective known as The Falcon calls on his brother to help him stop the Nazis from assassinating a key diplomat.