>> it literally looks like a slaughterhouse. you have blood on the walls, bullet strikes, shell casings on the ground. all the furniture is soaked in blood. >> the victims were 18-year-old tiffany raul, who lived in the home. her boyfriend, marcus priscilla. 21-year-old adele burt sanchez. and 18-year-old rachel colarutis. it looked as if the victims were watching tv and were caught off-guard by the attack. >> they were leaned back in the couch, feet up, like anyone would if they were watching a show or relaxing. they did not seem to be alarmed at all. >> these people had no idea they were about to be shot. >> it appeared as if rachel was killed while trying to call for help. >> she just dialed the 9 and the 1 key. the assailant came back to her and beat her to death. >> rachel was shot six times. and pistol-whipped.