Planet of Peril follows the story of Robert Grandon of Terra who finds himself on the planet Venus following a process which enables the subject to trade consciousness' with their counterparts on other worlds.

Venus is at a similar stage of evolution that Earth was at during the Carboniferous era - thus densely populated by Ferns, lichens, fungi and other greenery.

The humanoids range vastly from blood-sucking bat-men to cavern dwelling wretches with no eyes!
A technologically sophisticated race operate fleets of airships which are controlled by telekinesis, whilst more primitive humans find themselves enslaved by gigantic termites. ( )