Sacrifice

Neither pride nor shame motivated the murderer to voice his deeds. He wanted the world to understand the motives and to find at least one person who would care for him in his entirety. His acts had followed necessity but he had fallen short of the count. Four lives taken to save one. That was the deal but he had only taken three. So the one he had willed to save had perished as if to even a score.
His mother had told him the meaning of numbers. Three is life, four is death. Four had been requested but he had chosen life. He had taken the absence of the forth member as a sign and instead of hunting her down had let her live. By doing this the pact had been broken and fate had continued it's original path. The three he had killed had died without purpose turning his actions from saving a loved one to murdering the innocent.