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.
The new era of peace and prosperity is interrupted by a new type of enemy. One that travels among the walkers. One that will turn whispers of their appearance to screams. Collects THE WALKING DEAD #133-138.