"FBI agent Rachel Walling finally gets the call she's dreaded for years, the one that tells her the Poet has resurfaced. She has never forgotten the serial killer who wove lines of poetry in his hideous crimes--and apparently he has not forgotten her. Former LAPD detective Harry Bosch gets a call, too--from the widow of an old friend. Her husband's death seems natural, but his ties to the hunt for the Poet make Bosch dig deep. Arriving at a derelict...