A good episode, it's been a long time since I have been surprised by the killer. At first, I thought that was the daughter, then, when they talked about colone I thought "Ha! The guy!" and then I thought "Or maybe the Asian woman?" But I got surprised at the end and that's what I like in this king of tv show.
I wish they would develop Abby's character and make it "grow up" a little, I love her style but she acts the same way than in season 1 so it would be great to make her gain in maturity.