The Blue Peril (English translation of the French title, Le Péril Bleu) is a 1910 French science fiction novel by Maurice Renard. It was translated into English by Brian Stableford in 2010, and is considered by many to be Renard's masterpiece, with one critic stating it "still reads as well as when it was originally published." While a science fiction story, it also combines elements of the detective and horror genres. It features invisible sentient creatures living high in Earth's atmosphere who fish for men the way we do fish, and study the specimens they catch.
