Flesh for the Beast (2003)

A team of parapsychologists is invited by John Stoker to research the evil Fischer Manor, an ancient brothel where the owner Alfred Fischer was a gigolo that practiced black witchcraft. While investigating, the men are attacked by flesh-eater succubus and the psychic Erin Cooper seeks a powerful amulet for John Stoker. When they meet the trio of succubus, John finds a lethal secret.