Paranormal illusions, spooky magic and ghostly goings in the underground vaults of Edinburgh. This Fringe, Scotland's most haunted pub – built into those vaults – plays host to Edinburgh Horror Festival sell-out magician Ash Pryce. Descend into the underground chamber, 250 years old and filled with ghosts of the past. Will the ghosts make their presence known, or is it just a load of smoke and mirrors? 'Prepare to be convinced about the thin veil that separates our world from…