Honestly, I think the story was lightweight. Probably they've thrown the episode in to please fans with references to former episodes and a few little in-jokes. It is what it is. Rossdale was good as the weary don't-wannabe Vamp and his relationship (his side of it) with the manager was touching. No matter that the manager turned out to be managing the killer too.
Great to see Reid more involved and really happy for what that must mean for MGG's recovery. But why did JJ go alone to that house, that creepy house, when they were in pursuit of a killer seizing young women for the purposes of exsanguination? Listen JJ. Young women. Exsanguination. Your son wants to be an orphan? And how on earth did it take her so long to get there? The others turned up in a trice, a journey which took her hours to accomplish. Shakespeare it ain't. Double time's no explanation.
Ah but it was good, good, good to see JJ and EP more involved in the action, and more moments with wonderful Garcia too, with correspondingly less focus on the heavies of this season so far (DM and AH) -- I say that as someone who loves Morgan. I missed Rossi though. He's the forgotten man apart from that one episode this season. (He and Reid, and JM didn't break anything).