bedroom down the long hallway. >> it was a dark figure wearing gloves and a mask. the stranger suddenly stabbed nick and left him for dead. >> as he's laying there on the floor he actually sees his perpetrator run from the house. christina began freaking out. she was terrified. >> christina ran upstairs to her apartment to get help. her babysitter catherine was there with her boyfriend scott. they hurried downstairs. >> christina started walking toward the sliding glass door and i grabbed her and i said don't touch anything. >> the door was smeared with blood and the scene inside was unspeakable. >> somebody said oh my gosh, there's nick and you could see him through the window on the floor in a pool of blood. >> i said get out of here and go down the street. she said what are you going to do? i said i have to get that boy out of there. i'm not leaving without the boy.