Tama Of The Light Country — Ray Cummings

Are all the artificial satellites circling the Earth ours? How can we be sure that these little metal globes, these observational devices with their top-secret interiors, were all made on Earth? Perhaps there is one up there that was not? When such a space satellite was located, it caused a furore. But that was nothing to what happened when it was accompanied by a mysterious rash of kidnappings--young girls were being taken away, carried off to some strange destiny in outer space! TAMA OF THE LIGHT COUNTRY is the startling novel of the conflict with Mercury--the smallest world of the solar system--which harbored an unsuspected secret.