The book collects fifteen short stories by various authors, with an introduction by the editor. All share the Cthulhu Mythos setting originated by H. P. Lovecraft, with the twist that the dreaded revival of the fearsome "Great Old Ones" who once ruled the Earth is not a future possibility but an event that has actually come to pass, taking the Mythos from the realm of contemporary horror into that of apocalyptic and post-apocalyptic fiction.
