I really liked this episode, despite the very odd ending--were they running short and needed 30 seconds of filler? The scenes with Dean in front of the mirror were great; the obvious parallels to Alzheimer's made it very touching. I think it's pretty clear that we will see the Grimoire again--and whatever Rowena will do with it. I like they are giving her a bit more depth--not just a simple cartoonish character. Still, this season is all over the place. I wish it was a bit more focused.