bixby knolls, quiet, affluent, "leave it to beaver" homes on carefully tended tree-lined streets. violent crime is unheard of in bixby knolls, which is just the way they like it here. maybe that's why, if they grew up here or moved here, they rarely leave. like rachel kerns. >> everybody's very friendly. always waving. you don't get that a lot in southern california. >> reporter: rachel still lives in the house she grew up in. >> we were able to play as kids at all hours of the day. we didn't have to worry about anyone ever hurting us or coming after us. it was a really safe neighborhood. >> reporter: but then came that november morning when tracy manzer roared over there in her car. >> i had no idea what i was going to find. but i knew based on how i was told about it that it was going to be something, you know, very bad. >> reporter: oh, and it was. >> i was barely out of my car