Edge by Thomas Blackthorne

Thomas Blackthorne is the pseudonym of noted British SF author John Meaney. His most recent novels under his real name are the very wonderful Bone Song and Dark Blood, set in a dark, gothamesque city called Tristopolis, and exploring other parts of that strange alternate Earth. Before that was the post-cyberpunk To Hold Infinity and the Nulapeiron Sequence of Paradox, Context and Resolution.Paradox was voted the Independent Publishers' Book of the Year (SF/Fantasy category), was first choice in the Daily Telegraph Books of the Year (SF/Fantasy category), and shortlisted for the British Science Fiction award. To Hold Infinity was also shortlisted for the BSFA Award, as was his novelette Sharp Tang. He has published short fiction in magazines and anthologies, including reprints in several "year's best" selections. The author lives in Wales, UK.