Drawing primarily on Britton's (1998) concept of unconscious belief, this paper explores and analyses clinical work with a couple who had specific unconscious beliefs about the couple relationship. In particular, it describes the challenges a couple psychotherapist faces when related to, rather relentlessly, as a persecutory bad object. Couples might find themselves in the grip of unconscious beliefs, Britton suggests, because of earlier oedipal difficulties. The couple described here had profound oedipal anxieties, difficulty tolerating a triadic relationship, and, moreover, fixed beliefs about what it meant to be a parental couple. The paper demonstrates that just as the couple are likely to have found themselves in the grip of unconscious beliefs partly because of earlier unresolved oedipal difficulties—so they were helped to become aware of them through finding a “triangular psychic space” in the therapy.