The bill amends Chapter 12-12 of the General Laws by adding a new section titled "Acquittal in another jurisdiction as bar to prosecution." It establishes that if a violation of any criminal law is a violation of federal law or the law of another state, an acquittal under federal law or the law of another state for the same set of facts or acts shall be a bar to prosecution in this state, unless there exists newly discovered evidence which would substantially indicate that prosecution in this state is warranted. This act will take effect upon passage.