The technical difficulties posed for the child psychotherapist working with children who have themselves experienced violence and abuse are addressed. A distinction is drawn between violence in the service of communicating about such experiences and violence that arises from more perverse aspects of the patient. The therapist's need to pay close attention to his counter-transference is emphasized. From an example of a single session we see the therapist's struggle to receive the communicative aspects of extreme acting-out behaviour at the same time as creating a safe setting in which thinking can take place.