why did jack kill bod's family in the graveyard book
The Graveyard Book Years pass by, and it is revealed that Jack has still been searching for the toddler that he had failed to kill. He must complete his assignment or his ancient, secret society, the Jacks of All Trades, will be destroyed by the surviving boy. It is revealed that Jack originally went to kill the Dorian family because of a prophecy which stated that Bod would destroy the Jacks of All Trades.