This article focus to Define and Discuss on Criminal Law. In criminal law, justice, depends upon capacity of criminal lawyers to represent their clients in court. The court is a new battlefield of wits and also verbal proficiency between attorneys who don’t want defeat and who continue to formulate credible reputations. Winning trial after trial is the better portfolio these criminal lawyers can show their future clients. Finally discuss on the pretender, the innocent, the guilty and the psychologically ill.