I actually agree with you completely about the surprise and dismay when Dean was portrayed ignorantly in knowing who Mina and Harker were. The minute I heard him ask, I couldn't for the life of me believe that he hadn't known. Considering how many different renditions of Dracula are available out there (including porn, I'm sure), not to mention it being one of -the- most famous of all classic vampire stories.

Dean's too much of a movie buff in general, not to mention his attention to detail when it comes to horror movies, not to have known this. I've purged the ignorance from the record and call a do-over.