The whole season has been great. Although I am really disappointed in Ray cheating on Abby again. That part was, IMO, wholly unnecessary and uncreative. I get that things were going too good for Ray and he had to fall but Belacov's presence alone, and what happened to that boxer, was enough torture to Ray as was his involvement in sex trafficking. He didn't need to cheat on his cancer-stricken wife. It doesn't sink him any further. It simply makes him unlikable.
Granted, it is somewhat forgivable because of the fact that he was basically catatonic. But still, pretty low.