'I have stood on the dim shore beyond time and matter and seen it. It moves through strange curves and outrageous angles. Some day I shall travel in time and meet it face to face.' Unlike nineteenth-century Gothic fiction, which tends to fixate on the past, the haunted and the ghostly, early weird fiction probes the very boundaries of reality - the laws and limits of time, space and matter. Here, unimaginable terrors lurk in hitherto unknown mirror dimensions, calamities in ultra-space threaten to wipe clean all evidence of our universe and experiments in non-Euclidean geometry lead to sickening consequences. In twelve speculative tales of our universe's mathematics and physics gone awry, this new anthology presents an abundance of curiosities - and terrors - with stories from Jorge Luis Borges, Miriam Allen deFord, Frank Belknap Long and Algernon Blackwood.