Key legal question
Whether the public-law appeal against the refusal of additional evidence was admissible despite being directed against an incidental decision.
Extracted holding
The appeal was inadmissible because the appellant failed to show a non-reparable legal harm from the refusal of evidence.
Extracted reasoning
Evidence rulings are generally not immediately reviewable; the appellant's alleged risk of loss of proof was too speculative, and any disadvantage could be remedied later in the criminal proceedings or on appeal against the final judgment.