The Guilty Client

You are a criminal defense attorney. During a confidential meeting, your client, who is on trial for a serious crime, admits to you that they are guilty. The prosecution's case is weak, and you are confident that your legal skills can secure an acquittal. If your client is acquitted, a guilty person will go free. If you act on your knowledge of their guilt, you will be violating attorney-client privilege, a cornerstone of the legal system. What is your professional and moral obligation?