An old kind of creaky scince fiction story about an invisibility machine invented in the nick of time to allow our hero to infiltrate the embassy of a hostile power which swiped your heart ray design. Much of the story is the actual mission to recover the plans. It's an adventure story.
An old kind of creaky scince fiction story about an invisibility machine invented in the nick of time to allow our hero to infiltrate the embassy of a hostile power which swiped your heart ray design. Much of the story is the actual mission to recover the plans. It's an adventure story.