In 1894 Wigan was having a feast of cultural entertainment. The Morgan-Drew players from London were presenting a celebrated Victorian melodrama, but nearby the Richard Throstle Magic Lantern Company was presenting a ghoulish extravaganza called ''Phantasmagoria''. They're at opposite ends of the cultural scale but the town was just recovering from the recent miners' strike and it seemed that happily there might be something for everyone. It wasn't to last though as the town is soon in turmoil after a gruesome murder. Detective Sergeant Samuel Slevin of the Wigan Borough Police is called in to investigate and soon discovers that much is not as it seems.