investigator jimmy edmunds entered the home of kay, the little league mom, through that shattered glass back door, the one the contractor first noticed. then edmunds saw it: a trail of blood. >> immediately, i could start seein' spots of blood on the floor. i could see an empty coffee cup that had spilled right there on the floor from, from mcdonald's. >> there was a mcdonald's bag on -- food bag on the floor and a purse. and i started seein' signs of blood on -- on the sofa in the living room, on the -- on the carpet. and then you go into the foyer area, where there was a lot of blood on the walls, on the door, on the floor. >> so this is suggesting a moving struggle. >> definitely. it looks like the homeowner came home and surprised a burglar in her house, and a struggle ensued where she was beaten. >> reporter: the bloody path led edmunds further into the house, to a bloody hand print on the door out to the parsons' garage. >> and you can tell there was -- there was more beating goin' on in the garage. there was blood spatter on the walls. so she was already bleeding before she got i