4 Essential Duties for a Criminal Lawyer: Few people actually set out with the intention of committing a crime. Most people are sane and decent, and do not lead a life of intentional criminality. Even still, many crimes end up happening in the heat of the moment, or by mistake, and those criminal charges are levied against tens of thousands of people every year. Sometimes they’re even levied against innocent people who truly committed no offence.Regardless of where you might fall on the spectrum, you should know that if you have been charged with a criminal offence, it is your right by law to be represented in this matter by a criminal lawyer. Even if the offence is something you feel you can walk away from, it’s always best to let a lawyer handle it. Here are some of the most essential duties of a good criminal defence attorney.