'I called the police to help him, not to kill him'

On Oct. 2, 2016, Chad Murphy was in the middle of moving into a new condo with his father, an aging widower. The idea was for Murphy to move in with him and help out. 
Murphy’s sisters and other family members spent the Sunday going back and forth from the condo in Île-Perrot, packing and unpacking.
By the time Murphy arrived later in the afternoon, a sibling argument that had been brewing all day boiled over.
Stressed by the move and already struggling with depression, Mur