This was certainly enlightening, in that the added scenes not in the movie sure did make things make more sense, or just filled in what did but we didn't see the whole thing. Some book scenes were noticeably different from what's on screen, but no big deal to the grand scheme of things. But most importantly, I found where everyone got the Saavik is part Vulcan part Romulan stuff - sure wasn't in the movies at any time! Anyway, some pretty good stuff here.