prison wood shop, a restricted area. >> there's nobody at the door, no guards or anything. i went in there, and as i came up from behind him, he had all these little different statues lined up, 10, 15 of them maybe. i couldn't tell what they were at first. as i got closer, i noticed he had a big map laid out. he drove on the map, folded it up really fast and slid it off the side of the table. i go what are these things anyway? he said they're these little falcons, they watch over the dead, jimmy, they do. >> and they look like? >> a good size chess piece. >> jimmy had a strong feeling his wood carved falcons and map were journal keeping by a serial killer. >> that map had little red dots all over it of illinois, indiana, wisconsin. you would look down at this map, you could see all the little spots are burial spots where he's got somebody. >> all those months of dangerous, painstaking work had paid off. jimmy had cracked the case. mission accomplished.