Jonathan Stroud The Screaming Staircase

When the dead come back to haunt the living, Lockwood Co. step in. .. For more than fifty years, the country has been affected by a horrifying epidemic of ghosts. A number of Psychic Investigations Agencies have sprung up to destroy the dangerous apparitions. Lucy Carlyle, a talented young agent, arrives in London hoping for a notable career. Instead she finds herself joining the smallest most ramshackle agency in the city, run by the charismatic Anthony Lockwood. When one of their cases goes horribly w