A criminal lawyer is someone who specializes in handling criminal cases with implications such as arson, DUI, murder, theft, etc. The primary role of a criminal lawyer is to review evidences and to map-out an effective defense strategy. Criminal lawyers either work as defense lawyers or prosecutors. A criminal defense lawyer will represent the accused, advice the client on legal matters, and assist in the framing of legal documents such as contracts, wills, etc. They can also act as public defenders in cases of indigence. A criminal defense lawyer with substantial expertise in the field will have the ability to interrogate the prosecution witnesses to prove the client?s innocence. In extreme situations, a professional lawyer may negotiate with the prosecution lawyer to mete out charges and punishments in an equitable manner. A prosecutor works on behalf of the government in criminal proceedings. Whether it is defense or prosecution, criminal lawyers can utilize government statistics and other official documents at any phase of the case. The laws governing criminal lawyers vary from state to state, but a basic code law is observed all over the United States. The criminal lawyer?s office will take up the responsibility of meeting the clients, arranging court dates, carrying out background researches of cases, etc.In order to practice as a licensed attorney, one should pass the bar exam after completion of a three-year course in a law school. In addition to educational requirements, a criminal lawyer must possess certain qualities such as good communication and listening skills, organizing capabilities, public speaking skills, ability to handle complex criminal cases, and to deal with people from all backgrounds. Since criminal cases would involve a lot of paper work for trials and criminal proceedings and so criminal lawyers should also possess writing skills. Additionally, they ought to be excellent negotiators. The salary of a criminal lawyer will depend upon the jurisdiction and the nature of the case.