In this article, based on a clinical case followed in BPP, we have highlighted the importance of the gaze and bodily mediation within the transference-countertransference relationship. The progression of the sessions led us to identify in the process a movement where something became knotted in an invasive manner but was subsequently resolved thanks to the re-establishment of a benevolent understanding on the part of the psychoanalyst. These two psychic and interrelational events made it possible to apprehend, through the instability of the patient’s mental functioning, the presence of insufficiently developed archaic foundations of his ego. The work with the patient facilitated the strengthening of the psychic container. The mnemonic traces of a traumatic history of the patient’s early childhood could be translated and expressed through speech without there being a risk of his psychic apparatus falling to pieces. The analyst can reach, as here in the countertransference, a hallucinatory state that allows for the resumption of traumas and their appropriation by the patient.