police are racing to the home of ashlee martinson. shooter in the upstairs, we also knew that there were three children that were also inside the house. >> downstairs, you wouldn't have known that anything had happened. but once you approach the staircase and go upstairs, there was a mess. >> reporter: coming up... >> there was an overwhelming amount of stab wounds. >> what happened inside the home amount of stab wounds. >> what happened inside the home of ashlee martinson? before i had the shooting, burning, amount of stab wounds. >> what happened inside the home of ashlee martinson? pins-and-needles of diabetic nerve pain, ... kicked off a lot of high school games... ... built a life for my family... ... and liked to help others in need. but i couldn't bear my diabetic nerve pain any longer. so i talked to my doctor and he prescribed lyrica. nerve damage from diabetes causes diabetic nerve pain. lyrica is fda-approved to treat this pain, from moderate to even severe diabetic nerve pain. lyrica may cause serious allergic reactions or

. >> chris: what drove 17-year-old ashlee martinson to murder her own parents? >> in this case, ashlee is both the victim and the killer. >> yes. >> chris: family secrets behind these doors, the closer she dropped on a dark online blog.