A challenging case is presented to illustrate the phenomenon of an invasive object. The specific concept of the invasive object has been elaborated recently by Paul Williams, who identifies a primitive object relation in which a child's nascent self is subjected to violent projections from a disturbed object. The object's force and malignancy have the dual effects of shaping as well as shattering the child's developing systems.

This article highlights the complex sequelae of an invasive object in an adult patient, and the treatment manifestations in primitive states, intense affects, transference–countertransference, and stagnation. The explanatory value of Williams's concept and his contribution to early object relations formulations are emphasized. Williams's lack of specified treatment approaches is noted. With the aim of elaborating the clinical application of Williams's idea, a possible pathway to the patient's reorganization is suggested.