One such case was profiled on "Court TV" not long ago. The district attorney appeared to have an airtight case. They had the body, a murder weapon, a motive, and an eyewitness to the event. During deliberations, the jury determined the eyewitness' testimony was self-serving and disregared her entirely. They found the defendant not guilty. Several years later photographs were found that showed the eyewitness testimony to be true. When the new evidence came to light the defendant admitted that he did the crime, but there was nothing that could be done. Double jeopardy rules applied, so he remained a free man. Free, but not innocent. Not guilty at trial, but not innocent.