Jeopardy terminates upon a jury's acquittal, and may not be overturned even if there is overwhelming evidence of a former defendant's guilt, or even if the judge had committed reversible error.
That's a pity. I remember reading about a case in Italy where 3 mafia hitmen who killed two 6-year-old boys and their mother were acquitted and couldn't be tried again in spite of new evidence. Such a spit in the innocent victims' faces. Fortunately, 2 of them have been killed later and the 3rd is serving a life sentence for another murder.
But if there is evidence that the judge has been bought, the defendant can be tried again? Like in Harry Aleman's case?