Speculative fiction is a broad umbrella category of narrative fiction referring to any fiction story that includes elements, settings and characters whose features are created out of imagination and speculation rather than based on attested reality and everyday life. That encompasses the genres of science fiction, fantasy, science fantasy, horror, alternative history, and magic realism.
One of the finest writers in the golden age of science fiction - and inventor of the intricately plotted form of SF known as the "space opera" - offers the story of a flawed hero possessing almost superhuman strength.
When his wife is kidnapped, war veteran Jim Pendrake embarks upon a search that takes him to a lost colony on the moon - and a secret, sinister society.
Originally published in Astounding Science Fiction.