Nominated for the Locus Award. The novel is a finalist of the German Science Fiction Prize. In north London, in Tufnell Park, right under one of the school playgrounds there is a railway tunnel leading to King's Cross station. Wet, dirty, dangerous. Beautiful place. So one Sunday before Christmas, one of my cousins dragged me there to look for ghosts. We found one. That's all. And on Monday, on duty, I had to go to a crime scene: an unknown person was stabbed to death in the subway at Baker Street station. Perhaps the supernatural is involved here. Naturally, there were many traces of magic on the murder weapon. The man killed turns out to be the son of a US senator, and before you can say "international incident", I'm contacted by an FBI agent. And down in the dark, in the London Underground tunnels, in the abandoned sewers and in the darkness of the rivers buried under Queen Victoria, I hear very strange things... “This exciting and fast-paced novel is enjoyable, witty and welcoming to new readers.” – Publishers Weekly “Ben Aaronovitch writes excellent humorous fiction. These books are extremely entertaining, primarily because the main character, Peter Grant, has optimism and a sly sense of humor. The powerful story and signature wit make it a pure pleasure to read.” – Tor.com “The story is witty, the plot is clever, and the characters are incredibly likable.” – Time Out “The perfect combination of CSI: Crime Scene Investigation and Harry Potter.” – io9