They should have quit after 3. Linden and Holder, never easy to like, squander any goodwill they built in the first 3 seasons by losing their cool and doing stupid, narcissistic things. The pacing is more plodding than usual (this did NOT need 6 hours) and the mass murder thread has a jumbled, WTF? denouement. It all manages to end on an up note, but by then I simply wanted it OVER.