What is criminal defense lawyer? That is what I've stuck on for ages! I have an expo coming, it's about my dream career but somehow I can not think of an idea of what to do for the subject? My mind just froze, I just...! Please help. For all I know is that a criminal lawyer is the one who defense a particular person who had accused of committing offense or offenses relate to murder/ theft...etc... and wants an appeal. Therefore he or she needs a criminal defense lawyer for his or her appeal (and also for legal advise).