another surprise. >> mark david chapman has plead gill toy to the killing of john lennon. >> he plead giuilty and sentencd to life. he never stood trial. >> i was disappointed because i thought that there were lessons that could have been learned from the case. >> lessons that h holgrief still cites to this day. >> the most common impression that one gets when they refer to the murder of john lennon they refer to a crazed beatle fan. >> but you believe that the trial would have prove ed thd t this guy was not a crazed john lennon fan, but this guy was a killer, and he was willing to kill to become famous? >> yes, he is guilty of a heinous murder? >> do you think that he would kill again? >> i think it is possible. >> you never know what is going