The Supreme Court of Appeal does not have jurisdiction to hear appeals on the merits directly from magistrates' courts where the high court has only considered a petition for leave to appeal under s 309C of the CPA but has not adjudicated the appeal on the merits. In such cases, the SCA's function when granting special leave is to determine whether the high court erred in refusing the petition, not to decide the appeal on the merits. Where a trial court's evaluation of evidence is inadequate, particularly in relation to contradictions in witness testimony and critical evidence such as ballistic evidence, and these deficiencies are sufficiently weighty, there are reasonable prospects of success on appeal and leave to appeal should be granted.