Question juridique clé
Whether the appellants had standing to appeal the cantonal non-prosecution order before the Federal Supreme Court.
Solution extraite
They lacked standing because they invoked only the merits of the criminal decision and did not show a concrete impact on civil claims.
Motifs extraits
A private complainant may appeal only if the challenged decision can affect civil claims; speculative future criminal convictions, possible suspension of civil proceedings, or possible later revision were too hypothetical and could not establish standing.