The question regarding the contesting of a verdict rendered by a court of first instance demands thorough clarification. In this connection, we will demonstrate the meaning and the purpose of the nullity plea and of the extraordinary objection. We will prove that it was not National Socialistic thinking in terms of violence [Gewaltdenken] which gave rise and impulse to their introduction, but rather considerations regarding the technique of procedure. By extending the competency of such courts, which had to decide only in one instance, the necessity arose for a higher instance to be able to take care of reviewing decisions. To be sure, considerably eased regulations regarding the review of verdict rendered by special courts had already been introduced when these courts were first established. However, these regulations proved by providing a resumption of proceedings [Wiederaufnahme des Verfahrens] insufficient in practice, particularly after it became evident that economic offenses called for uniform laws throughout Germany. Considerable divergence insofar as the legal interpretation of the new laws was concerned and with regard to the meting out of punishment became apparent in the procedure of the different courts, through a constant surveillance, which became especially necessary in view of the changing economic conditions. To obtain uniformity in this respect, new opportunities for additional legal redresses were created. We shall demonstrate that the nullity plea is a method of procedure which has been taken over from the former Austrian law. The diversity in legal conceptions concerning the principle of _ne bis in idem_ [double jeopardy] with regard to legal remedies will be treated in this respect.