The chilling note a notorious teen killer who bludgeoned his mother, brother and sister to death sent a relative as …

  • Murderer Matthew Wayne De Gruchy faces private parole hearing this week
  • In 1996, he bludgeoned his mother and two younger siblings to death
  • He sent a letter to a relative warning things would change when he was released
  • The relative voiced their concerns he could ever be rehabilitated
  • During his time in Goulburn Prison, he was charged over a brutal 2007 brawl 

Nelson Groom for Daily Mail Australia