Bion's conception of projective identification is a clearly a significant development that has broadened Kleinian theory and technique. Bion brings the object more into play and conceives of projective identification as a basic form of normal communication, as a two-person-psychology. “He brought the object, the mother or the analyst, into the conception of the process of projective identification more than Klein hat done” (Spillius 1992). In this paper I will present material from the psychoanalytic treatment of a patient with psychotic intrusion fantasy. My aim is to demonstrate how a corresponding shift in the role of the object/ analyst takes place due to an abrupt change in the analytic field. Studying this case material gives us an opportunity to observe in minute detail the underlying unconscious phantasies, both in the analyst and in the patient as they emerge and shape the interpersonal relationship in the field.