And so the nightmare began ...

... the nightmare that started with the dreadful, mind-draining heat and continued with one death, and another, and another ... each almost too horrible to contemplate.

The Experimental Spiders were sent to Earth from another planet—as man had sent monkeys and dogs on their space probes.

That meant a race superior to man was planning to make an invasion. And in the meantime, the spiders were on Earth, destroying everything they touched—eating men alive—making the result of the invasion almost a foregone conclusion ...