The binding legal principles established are: (1) Voluntary intoxication obtained after forming the intention to commit murder (to gain "Dutch courage") does not negate criminal capacity or mens rea for murder where the accused remembered events, acted methodically in furtherance of the prior plan, and had memory of the events. (2) A co-accused who masterminds a murder, issues instructions during its commission, participates physically (restraining the victim), verifies death, and fails to report or prevent the killing is a co-principal offender with the requisite actus reus and mens rea for murder, regardless of claims of mere presence. (3) Murder motivated by irrational belief in witchcraft, while not constituting murder in "aggravating circumstances" under section 48(2) of the Constitution, remains a heinous crime deserving lengthy custodial sentences to protect the sanctity of human life and deter such conduct. (4) Evidence of an accomplice who is a juvenile witness must be approached with caution, but where such evidence is coherent, corroborated in material respects, and the witness demonstrates no ill-will toward the accused, it may be accepted as credible.