TOM SWIFT AND HIS
POLAR-RAY DYNASPHERE

by VICTOR APPLETON II

When one of Tom Swift's closest friends vanishes in turbulent Pakistan, the young inventor is thrust into a world of mystery, intrigue, and deadly danger!
    The frightening incident leads to an invitation by a royal prince to visit Vishnapur, an ancient kingdom in the high Himalayas troubled by secret plotters and the destructive effects of a poisonous lake that may cloak treasures of the country's lost past.
     First Tom must solve a scientific crisis. A robot probe circling Titan, the huge moon of distant Saturn, has begun to undergo mysterious shifts in its orbit. Unless Tom can prevent the Kronus satellite from plunging into the Titanian atmosphere, nuclear contamination could doom future space-science research. The solution may rest with the youth's new invention, the dynasphere — if he can perfect a version powerful enough to reach across billions of miles of space, and a new spacecraft able to carry it.
     But success in deep space may depend upon detective work in exotic Vishnapur, as Tom and his friend Bud Barclay run up against ruthless men who deal death and throw lightning at the sky in the name of Yamantaka — the trickster demon-god!