>> i did not kill patrick baltazar or anybody else. >> did you ever meet patrick baltazar? >> no, i did not. >> never been in contact with that kid? >> i don't even know a patrick baltazar. >> we offered to show the dna findings to the stepmother, sheila baltazar. >> i can't read it. please don't make me read it. oh, my god! >> so we told her what the fbi report said. wayne williams cannot be excluded as the source of those two hairs. she listened. then this. >> without a shadow of a doubt, i really in my heart believe that wayne williams killed patrick baltazar. ♪ >>> next, trained to kill. >> were you trained in unarmed combat techniques? could you grab somebody bigger than yourself, put them in a choke hold. >> i'm sure there are other things in unarmed combat besides putting somebody in a choke hold. >>> good morning, how are you doing? >> when we return to prison for our final interview with wayne williams, we had one question he was not expecting. what wayne had written about being recruited for espionage training as a teenager at a secret government camp hidden in th

patrick baltazar, the 20th victim, would be the last child to turn up in a wooded area.an official would tell reporters fibers and dog hairs were being collected from the victim's clothing. the next child to die would be found in a river wearing nothing but underpants. fewer clues now for larry peterson. >> we're talking maybe a dozen or dozens of fibers as opposed to hundreds or potentially a thousand fibers. >> the 13-year-old victim was found beneath this bridge over the south river in atlanta's suburbs. a driver crossing that bridge earlier in the week saw a man leaning over the railing. it turned out to be the same afternoon jo-jo bell disappeared. at trial, the witness said the man was wayne williams. jo-jo's body would not be found for seven more weeks, until easter sunday. it had floated far down the south river, almost into another county. >> he also had nothing on but underwear basically. >> medical examiner joseph burton went out in a boat to retrieve the boy. >> we've got the body wrapped in a sheet. i'm the one with the shirt off. >> dr. burton ruled both jo