The novella "e;Nightmare Planet"e; is the conclusion to Murray Leinster's popular Argosy series and is most closely linked to his previous tales "e;The Mad Planet"e; and "e;The Red Dust."e; A spaceship lands on a seemingly uninhabited planet that turns out to be the vestiges of a grotesque science experiment gone horribly awry. Will the crew members be able to survive in this hostile territory?