Whenever you do something kind, your life gets proportionally longer, and unkind things shorten your life. A murderer becomes the oldest person in the world. Maybe he only murders really really bad people?
They heard footsteps behind them, and I glanced behind us toward the beginning of the alley, we had hit a dead end. I looked up and saw a black something zooming in on us from above. I turned to my companion and said, "Do you trust me?