In this actioner, heroic G-man Brass Bancroft must assume the identity of a notorious spy who died in a train wreck so he can expose a suspected spy. Brass meets the spy and is told to get aboard a Navy dirigible and get information concerning a top-secret "inertia projector" the Americans are developing. Brass does, and soon discovers that one of the politicos aboard the ship is intending to steal the blueprints for the spy. Fortunately, Brass stops him, but during the flight, they encounter a terrible storm and the spy escapes with the valuable plans forcing Brass to shoot down his plane with the prototype.
by Sandra Brennan synopsis