>> they brought chuck erickson in for questioning. but in the chair, he went all vague on them. so was he backing out? >> i can just be sitting here advocating all of this -- like, i don't know. i don't. >> but they talked. there are ways to ask questions. and during a long conversation, chuck seemed to remember a whole lot of things. detailed things. >> where did you hit him? >> had the head. >> in the head with? >> a wrench. >> did you see blood coming from him? >> yeah. >> okay. >> the motive, he said, was robbery. money to buy more drinks back at the bar. >> was this at closing time? >> this was before that. >> okay. >> it made perfect sense, fair-skinned teenager drinking a few blocks from the newspaper. but remember, the custodian saw two young men in the parking lot, and the police tracked two sets of bloody footprints. and so here it was. the moment ryan ferguson's fate was sealed. >> i remember seeing ryan hovering over this guy, and i think i asked him if he was dead and ryan said, "yeah, he's dead." >> things began happening very, very fast. ryan, remember, was at col