Yeah I think this episode redeemed a lot in Blake's character. She seemed very flat before which changed with the introduction of her husband ( and D. W. Moffett weee!! :D) I liked the Reid/Blake scene, it was a nice flashback to their friendship and when Reid confided in her about Maeve.
As for the unsub, yeah I figured it out as soon as he introduced himself to Emma. He jut seemed too good to me, and I knew there had to be something wrong. I guess we should be thankful that they didn't introduce him in the first ten minutes eh?!
All in all, a good profiling based episode and extra kudos for Reid being a badass. The promo for the finale doesn't look good, but with the way promos go, nothing is probably going to happen to the characters implicated there.