Multiple Criminal Trials
The prohibition against multiple trials for the same matter is a basic principle of criminal law and long a principle deeply rooted in European tradition. Many jurisdictions consider it important enough to deserve inclusion in their constitutions. Nevertheless the relevant provisions have been applied in quite diverse patterns throughout the various common law jurisdictions, and within each of them have developed unsystematically. They have been the subject of severe criticism down to the present time.Three main doctrines have been developed in the common law jurisdictions:(a)Former trial:This is better known in England asautrefois acquitandautrefois convict, and in the United States as double jeopardy. A man can be tried only once for his criminal behaviour. Once a lawful verdict has been rendered he is protected against further prosecution for the same matter. Underautrefois acquitandautrefois convicta verdict must have been formerly pronounced in the matter which is charged in the subsequent indictment. Under double jeopardy it is enough that the defendant has been in jeopardy of conviction (for the same matter) in former proceedings.