London, November 1890. Crime scene photographer Sarah is riding on a train that crashes. While rescuing other passengers, they find a woman who's been strangled to death. Their search for her identity and her killer lead them to Cremorne Gardens, a seedy riverside pleasure park that's a combination carnival, theatre, freak show, and museum of oddities. It's among the most challenging cases that Sarah has ever undertaken. The suspects include a dwarf, a female acrobat, and a member of the Royal Family. What dangerous secrets are hidden behind the tawdry glamor of Cremorne Gardens?