I thought it was pretty good overall. The case the team was working on was kind of lame. I understand they needed something that would act as filler and to account for Reid's injury, though.
It will be interesting to see how Hotch recovers both physically and mentally from his attack. I personally hope that when they do catch the Reaper, they don't do the standard victim revenge plot and then end up just putting him in jail. He should die in a horrible way that doesn't end up putting Hotch in jail.