I would give it a 9+...gripping, intense and, like others have noted, the beautiful scenes between Peter and Walter are often overshadowed - it just proves that even without any Bell/shape shifter/bleeding mercury etc drama, this is a wonderful show and it's always a treat to watch the powerful yet subtle performances of these terrific actors....storyline is a huge and important factor, of course, but the actors makeFringe what it is to me.
Oh well said Lindley. You summed up how I feel about the actors on this show. It's their interaction that I love. Especially for me it's the relationship between Walter and Peter. Just wonderful and I look forward very much to the journey that the writers will be taking them on this season.