graphic details surrounding his mother's murder, the "lockup" team never imagined we'd encounter another inmate at wabash with a similar story. then, we were introduced to 47-year-old joseph garner. >> i've been down 9 1/2 years, have 22 1/2 more to go. i've been -- my crime is murder. and i cannibalized during the process. >> garner killed his father on christmas eve 1995. at the time, he believed his dad was preventing the second coming of christ. again, we'll warn you, his account of the murder is extremely graphic. >> i eventually told him to sit in the chair and not to move. and i started singing "the battle hymn of the republic." glory, glory, hallelujah. i told him they're coming. do you hear them? i was wigged out completely at that time.