serving time for murder at animosa state penitentiary in iowa. >> i was never incarcerated with him. when i found out he was getting incarcerated, what he did time for, what he's charged for, they asked if there are any problems if we're in the same prison. i told them, yeah, i would probably end up killing him. i just cannot condone that. >> "lockup" has profiled many inmates who spew hatred to sex offenders. but we've also introduced viewers to those on the receiving end. thomas headley is serving a 15-year sentence at utah state prison. and like many sex offenders says his punishment is unjust and his crime misunderstood. >> i was charged with kidnapping somebody that was under 14. i am a man that is attracted to young women, god forbid. 99% of us are. >> when we interviewed him, headley was serving his time in solitary confinement as a punishment for being uncooperative. but he explained to us that he had his own motives for being in the hole.