Enjoyed the second episode more than the first. I don't think this storyline is too "big" for "Castle". The series is a mystery show. It is all about uncovering secrets and exposing lies and solving mysteries, at any level while revolving around the relationship between Rick and Kate. I thought these first two episodes did a great job of building upon that notion. I believe Lisa Edelstein is on board for a three episode arc? Will be watching last night's episode sometime hopefully later this week.