Hallorann, whom Danny had contacted telepathically, travels from Florida to Colorado, only to be assaulted by Jack with a croquet mallet and left for dead. Danny telepathically communicates with his father, who momentarily breaks free of the ghosts' grip, and then tells him that the old boiler has been neglected. Danny, Wendy, and Hallorann (who had only been stunned by the attack) escape to safety. Jack sacrifices himself to prevent the ghosts from repossessing him and allows the boiler to explode and destroy the Overlook.