In this masterpiece of fear and suspense, Rufus King tackles the dangerous subjects of love and atomic energy. The resulting romantic riddle is a brain-teaser guaranteed to stymie detective fans until the very last page. Ramier Bellamy kisses Drusilla Duveen good-bye and prepares to make himself invisible. But something goes wrong with his experiment -- and when the machine he invented started to hum, it is Drusilla, not he, who vanishes! That's just the first in a series of mysterious events that will keep you guessing -- and wondering!