as for u.s. attorney melinda haag, i've called and called and called and nothing. that's what i'm getting from my phone calls right now. ♪ good evening, i'm anderson cooper. in early june, southern california was the scene of a deadly shooting rampage. the suspect murdered five people, including his own father and brother before he was shot and killed. each time these crimes occur, we ask what could have been done to prevent it? were there any warning signs? often it's the team that are closest, their spouses, relatives who feel the most responsible. tonight, a perspective of the most troubled and violent among those. we hear from wives, daughters, brothers and fathers of those who would commit unspeakable acts. >> that child kidnapper operated