A case of the murder of a spouse (domestic violence) where the relationship between both parties, as the person under investigation referred to it was very toxic and harmful due to the severe Borderline Personality Disorder (BPD) suffered by the victim. According to the perpetrator, the victim's psychic pathology reached cathartic psycho-emotional peaks of marked hostility and behavioural aggressiveness with heated discussions and escalating conflicts between the two over an extended period of the relationship and for which, in the end, the perpetrator decided to end his partner’s life with an axe. Later, the aggressor buried the body at his own home and kept it buried for about 10 months until it was relocated by the authorities.