It's 1987. Hair is big. Rock 'n' roll is hard. A killer leaves elaborate scenes in city parks--re-enactments of a dark fantasy driven by ritual. Detective Mahoney is haunted by the word "serial" as he confronts the ghost faces of a past failed case. The bodies stack up. The linkage is undeniable. The clues are bizarre and inconclusive. Drowning in human carnage and pulled into the wild underground of hard rock, Detective Mahoney questions his old-school methods. Does he trust his gut? Does he embrace new hocus pocus profiling? Or does he let the ghost faces drive him to insanity while a killer runs free?