Snakewoman (2005)

A company is interested in acquiring the rights to a cult movie icon Oriana Balasz's estate, so they send a representative, Carla who is given the task of persuading her heirs to sell the rightism. What appears to be a routine task quickly becomes difficult when the eccentric heirs reveal their intentions regarding the estate. Upon making their acquaintance, the agent discovers that they live a life of unbridled hedonism. This is a family with some sizable skeletons in their collective closet, and as the agent delves ever deeper into their mysterious background, she slowly begins to succumb to their dark and seductive charm.