1. Under section 269 of the Criminal Procedure & Evidence Act, it is lawful to convict an accused on the single evidence of a competent and credible witness in criminal cases (except perjury and treason). 2. When assessing single witness evidence, there is no rigid rule of thumb; the court must weigh the evidence, consider its merits and demerits, and decide whether it is satisfied that the evidence is truthful despite any shortcomings, defects or contradictions (following S v Sauls & Ors). 3. The court should be attentive to the nature of the witness, including their apparent character, intelligence, capacity for observation, powers of recall, and objectivity, and must weigh the evidence against objective probabilities and other evidence. 4. Corroboration of single witness evidence is not essential, though any feature that increases the court's confidence in the reliability of the witness may overcome caution (following S v Banana). 5. In sentencing for multiple counts, the default position is to treat each count separately on its merits, and only in appropriate circumstances should a globular sentence be imposed (following S v Chawasarira and S v Mudzingwa). 6. Life imprisonment is appropriate for premeditated murder involving multiple victims where there are significant aggravating factors and no mitigating circumstances that would make such a sentence offensive to justice.