appearance. >> seeing jonathan richardson for the first time was kind of shocking. you had to wonder what was going through that guy's head to do that to himself. he stood out. >> when i first saw jonathan walking down the corridor it was like, whoa, i've seen some -- some odd-looking dudes in prison, but i think he was one of the oddest. >> richardson is serving a 55-year sentence for a murder he committed at the age of 19. when we met him, he was assigned to the secured housing unit or shu for the violence he committed behind bars. in this never before seen interview, he explains what happened. >> i got into an altercation with my bunky, i ended up stabbing him. he had wanted certain sexual favors. i wasn't that way. so i ended up stabbing him, basically to defend myself. >> the inmate survived but richardson has not only directed violence towards others, he has turned it toward himself, as well. >> i have tried to light myself on fire one time. caused a lot of burns. i lost two fingers as well to the right arm. so -- >> may i see? >> sure, if you want. >> how did