After handing out lollies to trick-ortreaters, Adriane Insogna, 26, finally called it a night.
It was Halloween 2004, and the young engineer loved the idyllic three-bedroom house she shared with her friend Lauren Meanza, 27, and their new housemate Leslie Mazzara, 26.
At around 11pm, Leslie and Adriane headed to their bedrooms upstairs while Lauren slept in her room downstairs.
But just after 1am, Lauren was jolted awake by a blood-curdling, terrified scream on the floor above.
Leslie and Adriane lay bleeding with stab wounds
In the darkness, Lauren opened her door and heard someone barrelling down