The future of humankind as an ever-changing organism is a subject of much debate. Where is our evolutionary path leading? Will the next rung take the form of mental transcendence, will it set humankind on a course toward divinity, or will this uncertain path involve a dark and terrible reversion? Co-editors Michael Bailey and Darren Speegle present eighteen tales of dark science fiction that explore the course of evolution, written by some of the best literary minds in the fields of science fiction and horror: