investigation. i plan to use the power of the law because it is my responsibility. >> willis is known as a prosecutors prosecutor. she is known as a tough cookie who is a real preparer. she likes to say i don't like to try things skinny. i don't like to be in a courtroom unprepared. >> reporter: it is a matt wayne that willis requested a grand jury to assist in her investigation. >> this is rare in georgia. >> reporter: robert james is one of the few district attorneys is overseeing a special purchase rancheria in georgia. >> their powers are much of broader than a regular grand jury. >> reporter: while it does not issue indictments, it can be a useful tool for prosecutor. >> she wanted to use the powers to subpoena people that she would not have access to.