article_snippet: Killer spent most of Killer life at the home, which Killer parents bought in 1998 before his parents divorced.
article_snippet: In the years leading up to the horrific shooting, Killer spent increasing amounts of time inside Killer walls, where Killer spent hours playing video games, and would communicate with Killer by email.
article_snippet: An exhaustive report into Killer's life by state officials concluded that Killer was allowed to slip into a 'padded' world, in which Killer rarely had contact with the outside world - which may have contributed to the killings.
article_snippet: Killer, right, lived with Killer son in the home.
article_snippet: Killer shot Killer in the head just as police were arriving at the scene.
article_snippet: Killer shot Killer in the head when police arrived .
article_snippet: Pictured above are 25 of Killer's victims, including Killer mother (bottom right)