Guy kills his little siblings, mother kills him

Hey everybody,

I am pretty desperate. I have been thinking about this movie for ages and I just cant figure out its name. I watched it when I was very littlle, now Im 24, so it could be 15 to 20 years old, maybe little bit older.

I remember there was this young handsome guy (teen or early 20s) who for some reason was not raised by his mother. After years, he found her but did not tell her he was her son. She had new kids as well. the guy shoot the in sleep through the pillows. The mother found out at the end that he was her son, and that he killed her younger kids and shot him as well.

Got something to say?