. >> christopher walker might have a little less swagger now than he did on the streets. he's serving 55 years for six bank robberies. >> you know, when you're faced with the type of time that i'm faced with, everybody, i can't speak for everybody, i can speak for myself better, you know, your whole perspective towards life changes. >> when you talk about a bank robbery, i mean, anybody out there that's ever done what i done, then they already know the intense rush this is. and that became very addicting. >> these days, walker only gets a rush from working out and writing poetry. it's a far cry from his bank robbery days when he says he never used a weapon. >> got yourself and somebody tries to stop you, you've got these and that's it. i went in there, i had a hat pulled down, and i'm talking on the phone, looking at the ground, so the cameras aren't going to get me. when you walk up to the teller, nine times out of ten, it's a woman. i would sometimes strike up a conversation, how are you doing today, da, da, da, yeah, looks good, really nice, whatever, just small talk.