Starts out very good but where's the ending?
I liked the visuals and use of music but it just seems to go nowhere. I mean she kills the guy, dumps his corpses in the basement with the others and that's the ending? Err. Not bad and quite eerie but needs a true ending IMHO.
BTW the type of demon you speak of is called a Succubus which comes in the guise of a beautiful women, seduces you and during orgasm sucks the lifeforce from your body (not a bad way to go actually...)
Tamara's use of pheromones to sexually attract men would seem to fit the profile of a Succubus.
However I would says she is actually more like a "living vampire" such as Erzsebet Bathory who others here have mentioned ("Erzsebet" is Hungarian form of "Elizabeth" as she is commonly known).
However I must correct a previous poster, Erzsebet was not a cousin or any other way related to Vlad Tepes (the historical Count Dracula)and he was born some one-hundred years before Erzsebet. However they do share the same sort of infamy for their taste of sadistic torture and both are considered "living vampires". She in fact became a Countess when she married the Hungarian Count Ferencz Nadasady.
She enjoyed killing and torturing young girls, preferably virgins in a variety of disgusting ways that would shock even Hannibal Lector.
Folklore claims she bathed in the blood of virgins girls thinking it would keep her appearance youthful however this has never been proven to be true.
This concludes our folk history lesson for the day. :)