When Singapore surrendered to the Japanese in 1942, the Allied POWs, mostly British but including a few Americans, were incarcerated in Changi prison. Among the American prisoners is Cpl. King, a wheeler-dealer who has managed to establish a pretty good life for himself in the camp. King soon forms a friendship with an upper-class British officer who is fascinated with King's enthusiastic approach to life.
When the first manned flight to Venus returns to Earth, the rocket crash-lands in the Mediterranean near a small Italian fishing village. The locals manage to save one of the astronauts Colonel Calder, the mission commander. A young boy also recovers what turns out to be a specimen of an alien creature. Growing at a fantastic rate, it manages to escape and eventually threatens the city of Rome.
Bedelia Carrington is living happily, it appears, in Monte Carlo with her husband Charlie Carrington. But a cultivated young artist, Ben Chaney, begins probing into her past with curious concern. Chaney, who is really a detective, learns that Bedelia's obsession for money has led her, in the past, to husband-poisoning for the insurance money.
