

In Libreville, equatorial Africa, the territorial agent makes plans for them to travel to meet Dr. Brady and Morgan request a leave of absence from Washington and head for Africa to investigate. Several months later, Brady reads a newspaper account of turmoil in Central Africa caused by gigantic monsters and surmises that the wasps in the missing rocket were exposed to huge amounts of cosmic radiation because an earlier, minimal overexposure had resulted in the birth of a spider crab twice the size of its mother. Arobi, Lorentz's African assistant, then informs him that a monster is believed to be terrorizing people and animals in an area known as Green Hell. Lorentz and his daughter Lorna perform an autopsy on a native and determine that he died of paralysis of the nerve centers caused by an injection of a massive amount of venom.

Some time later, in a remote part of Africa, Dr. After one of their rockets carrying wasps malfunctions and goes off course, a computer calculates that the rocket is likely to land somewhere off the coast of Africa.

Quent Brady and Dan Morgan are put in charge of a program that sends various animals and insects into space to test their survival rates. In preparation for sending a crewed rocket into space, American scientists Dr.
