Dark Side of the Morgue (Spike Berenger) by Raymond Benson
Rock 'n roll detective Spike Berenger returns to find out who is killing the (ex-)members of a Chicago progrockband. Raymond does an amazing job of creating a whole timeline and history for a band and even a whole music scene that never existed. The pacing and mystery of this second Berenger novel is better than the first as well as having a more realistic feel. I couldn't put this one down, probably because Benson filled this one with a great amount of cliffhangers and twists, making this one more of a thriller than most PI-novels are.