Barnabas' vampire abilities have me quite puzzled. Â The various things he did to frighten Trask - the voice, making the candles go out, the vision of the hand, dreams, etc. all seem to be things that Angelique as a witch would have done. Â I've certainly never heard of vampire having those sorts of powers. Â Back in the present, when he wanted to frighten Julia, he did something similar. Â He told Carolyn a story about where he learned to do this (I forget just who the person was who had taught him). Â I suppose this could have been the same thing, but it does seem rather strange.
Meanwhile, his "real" vampire abilities are quite suspect! Â He does manage to turn into a bat and dematerialize at times. Â He does manage to bite some people. Â Given that he's surviving, he must be getting blood somewhere (we saw graphic evidence of that in the beginning). Â
However, most times when he goes to bite someone, he bares his fangs, they see it and scream (I always thought that a vampire had some sort of hypnotic power that prevented them from screaming or resisting). Â So, he ends up trying to strangle them, and in most instances someone hears the screams and comes on the scene, forcing him to leave with the job undone! Â He seems extremely inept!!