as they closed in, stephen rios move to the ledge.d on him, at least negotiator talked him down. >> i just thought his behavior wreaked of guilt, to be honest with you. and it was just an innocent man doesn't act like that, not in my opinion. >> one of the commonalities people will throw at homicide actives is that they've got tunnel the john. as soon as that man got up on that roof and threatened to kill himself, after that, they just didn't think about any other possibility that was done. >> that's not true. you know, we could have ignored the rest of the leads there on out and said, no, we've got our guy. >> but you didn't. >> no, never. >> in fact, detective short set, his boss made sure to remind investigation team that stephen was just one suspect among many. >> used to tell us every day, don't put on your blinders, even at this guy looks like this is the person, we've still got to clear everybody else for not. >> like an ad, the aspiring chef. police interrogated him several times. found no motive. and besides -- >> kind of fel