Where an accused charged with premeditated murder was subjected to extensive, severe and escalating domestic abuse including physical violence, sexual violence, rape, threats of gang rape, economic control, and psychological domination, and expert evidence establishes that the accused's decision to procure the victim's killing was consistent with documented patterns of behavior of severely abused intimate partners who subjectively believe homicide is their only means of escape, substantial and compelling circumstances exist to justify departure from the mandatory life sentence prescribed by section 51(1)(a) of the Criminal Law Amendment Act 105 of 1997. In determining whether substantial and compelling circumstances exist, courts must assess the case from the perspective of the abused person, taking full account of their gender, abuse history, psychological state, and constitutional rights to dignity, freedom from violence and bodily integrity, in order to give proper effect to the equality guarantee in section 9(1) of the Constitution. The subjective belief that there was no alternative to killing the abuser, when supported by expert evidence on abuse patterns and the totality of the abuse history, significantly reduces moral blameworthiness even where the killing was accomplished through contract killers and was premeditated over a period of weeks.