Kernrechtsfrage
Whether the federal criminal appeal against the refusal to order a bookkeeping expert opinion was immediately admissible under Art. 93 LTF.
Extrahierter Entscheid
No immediate appeal was admissible because the refusal to take evidence did not create irreparable legal harm; the request could be renewed later before the trial court and, if needed, challenged after the final judgment.
Extrahierte Begründung
Decisions on evidence are normally not irreparably harmful. The appellant did not show that the expert evidence would disappear, that secrets were at stake, or that a later remedy would be ineffective. Any alleged loss of a mandate was only a factual disadvantage.