Another movie if you please.... All I know is it is a costume party at an old mansion and people are being killed left and right by an undead monster man creature still living in the spooky mansion. At the end of the movie, the lone survivor chick tries to escape, but the monster is lying in the hall in front of the door and he has the keys to the front gate for her to get out in his hands, I think she had a shotgun too, she is wearing a torn costume dress from the 17 or 1800's, the movie may have been late 70's early 80's though...