The author of the internationally best-selling Bartimaeus books launches a thrilling and chilling new series about three teen members of a Psychic Detection Agency who are battling an epidemic of ghosts in London.Jonathan Stroud, author of the internationally best-selling Bartimaeus books, launches a brand new series of supernatural thrillers about three teen members of a Psychic Detection Agency who are battling an epidemic of ghosts in London.A sinister Problem has occurred in London: all nature of ghosts, haunts, spirits, and specters are appearing throughout the city, and they aren't exactly friendly. Only young people have the psychic abilities required to see-and eradicate-these supernatural foes. Many different Psychic Detection Agencies have cropped up to handle the dangerous work, and they are in fierce competition for business.In The Screaming Staircase, the plucky and talented Lucy Carlyle teams up with Anthony Lockwood, the charismatic leader of Lockwood & Co, a small a