>> it seems like they kind of seem to put us together when we get out here because we better understand, you know, our illnesses and our little idiosyncrasies. they go along with being mentally ill. where a lot of people in general population don't understand that. i wish they had more programs like rtu all over, you know, the country because a lot of mentally ill people are ending up in prisons. >> for inmate joseph garner, processing his horrific crime has been the hardest part of his punishment. >> i have been down 9 1/2 years. i got 22 1/2 more to go. i've been -- my crime is murder, and i cannibalized during the process. >> on christmas night, 1996, joseph thought his father was preventing the second coming of christ. >> i tackled him from behind and somehow got around behind him and slit his throat. and i remember him saying, "please don't kill me."