FBI agent Rachel Walling finally gets the call shes dreaded for years. The Poet has returned. Years earlier she worked on the famous case tracking the serial killer who wove lines of poetry into his hideous crimes. Rachel has never forgotten the Poetand apparently he has not forgotten her. Former LAPD detective Harry Bosch gets a call too, from an old friend whose husband has recently died. The death appeared natural, but this mans ties to the hunt for the Poet make Harry dig deep. What he finds leads him into the most terrifying situation he has ever encountered. So begins the most deeply compelling, frightening, and masterful novel Michael Connelly has ever written, placing Harry Bosch squarely in the path of the most ruthless and ingenious murderer in Los Angeles history.