[uberPatriot]

The burden of proof for a criminal charge is "beyond a reasonable doubt", not "beyond the shadow of a doubt" or "beyond the shadow of a reasonable doubt."

That's the standard for a criminal conviction-for a charge, there just has to be probable cause. This investigation failed to turn up even that much.

[SedVictaCatoni]

That's the standard for a criminal conviction-for a charge, there just has to be probable cause.

Yes, but the original poster referred to "being able to prove a criminal act in court", i.e., a criminal conviction.