A series of experimental aircraft disappear during test flights over the sea, prompting a British Secret Service agent to go undercover to investigate. His sister, a reporter, also becomes entangled in the mystery while working undercover as a waitress. As the investigation unfolds, it becomes clear that a foreign power is involved, but the government and plane manufacturer initially dismiss the incidents as mere coincidence.
Q Planes
A struggling British spy embarks on a mission to unravel the mystery behind a string of inexplicable aircraft disappearances.