Two of L.A.'s finest, Cochese, a hard-boiled detective who has been made rugged by realities, and unseasoned Bobby, 'The Rookie' investigate the Drum Machine Murders! The detective duo are in hot pursuit of a psycho killer who targets members of underground bands in Los Angeles. After he brutally murders his helpless victims, he replaces their hearts with drum machines. Bent on tracking down this madman, Cochese & Bobby put it all on the line.