Left alone with his twins, David says he began hearing voices. "I was hearing, 'There's no future. Everything's ruined. Just kill them,'" he says. "I was worried. I remember having thoughts about them suffering from depression also, because they had been off school that day. ... They had colds, but in my mind, I interpreted it as something else."
When Tessara and Samantha asked their dad to play their favorite game, hide-and-seek, he interpreted it as a sign that he should kill them. While the girls hid, David grabbed two knives from the kitchen. He then found Samantha and stabbed her 18 times in the chest, back and head.
Tessara ran and tried to hide from her father. David chased her, pulled her out of an upstairs closet and stabbed her 14 times.