collapsed and succumbed to whatever medical emergency she was having. >> there wasn't any obvious signs of trauma on her body. >> she had a small bruise on the side of her neck. it didn't look like any sort of a -- >> could've gotten it any way? >> yeah. it didn't look like she was assaulted. >> but there was something off, too. didn't quite look right. they decided to treat it like a homicide. >> because you only get one chance at this. and so if you go in and you go guns blazing and you're trying to rush through things, you're going to miss things. >> the csi people arrived, used a laser scanner to quickly take billions of measurements and create this virtual representation of jessyka's house. 3-d, so more accurate than any photo. and then they removed jessyka's body. and, yes, detectives could see homicide was the right call. >> when we were able to actually look at her eyes, it was fairly evident that there'd been some