What Are Those Strange Drops of Blood Doing on Jennifer's Body?

SINOPSIS

Having recently escaped the clutches of a hippie sex cult, a beautiful model is pursued by a serial killer whose previous victims include former occupants of her new apartment.
Beautiful young model Jennifer Lansbury and her goofy friend Marilyn Ricci move into a swanky high-rise apartment after the previous tenant gets brutally murdered. Pretty soon Jennifer is being stalked by the mysterious killer. Probable suspects include a predatory lesbian neighbor, a weird old woman and her deformed son, and even the building's handsome architect who suffers from a severe blood phobia.