What is double jeopardy?

being tried for the same crime twice - prohibited by the 5th amendment to the constitution

Double jeopardy means going to court twice for the same cause and it's not permitted here in the U.S.A. Example John was arrested for attempted murder. They have the case and take to court and find out he is innocent. He cannot go back to court for attempted murder. (EDITED: They never prove innocence. Not Guilty means the case wasn't proven; it doesn't mean you didn't commit the crime. It just means you don't have to do the time.)

Answer

Actually, it's not only if you are acquitted, but convicted as well. You can't be tried twice for the same offense. If you are convicted of murder, they can't try you again for it because they didn't like your sentence. If you are acquitted, too, it's over. Nothing can be done. No appeals by prosecution. You are free!!!! You can shout it from the rooftops how you killed him. The only problem with that is that the family could use that against you in a lawsuit. Oops! (EDITED: If I were acquitted of a crime like murder, I would hope that I am smart enough not to shout it from the rooftops. You leave yourself open to being a pariah as well as lawsuits and may give the government the boost it needs to find something to charge you with whether it be perjury or possibly federal charges (very rare), but perjury could only be if you took the stand in your own defense and something you said were not kosher.)

Check my indepth double jeopardy answer under the question, "What does autrefois acquit mean in criminal law procedures?"

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