In parasitic relationships, the emotional and sexual needs of one partner are met at the expense of the other person. The ultimate expression of this type of relationship is illustrated in the story of Dracula. There are five themes that characterize the destructive nature of such a relationship: invitation, progression, seduction, inhumanity, and reversibility. There are also three subthemes, including fear of the unknown, multiple forms, and help in termination. These are presented and discussed in terms of parasitic relationships. An illustration is provided through a case example, and suggestions on how to use this novel as a metaphor in work with clients are presented.