Love is the most dangerous magic of all...Something terrifying is waiting for Tessa Gray in London's Downworld, where vampires, warlocks and other supernatural folk stalk the gaslit streets. Tessa seeks refuge with the Shadowhunters, a band of warriors dedicated to ridding the world of demons. Tessa finds herself fascinated by and torn between two best friends...First in the bestselling prequel series to The Mortal Instruments, set in Victorian London.