The New York Times bestseller! A new threat haunts the streets of London… Rory Deveaux has changed in ways she never could have imagined since moving to London and beginning a new life at boarding school. As if her newfound ability to see ghosts hadn’t complicated her life enough, Rory’s recent brush with the Jack the Ripper copycat has left her with an even more unusual and intense power. Now, a new string of inexplicable deaths is threatening London, and Rory has evidence that they are no coincidence. Something sinister is going on, and it is up to her to convince the city’s secret ghost-policing squad to listen before it’s too late.