This had happened before. He was familiar with this feeling - an outworldly sensation as if the world itself was pulsating. He could only feel it when he was alone and the city was asleep. Pulses, like heartbeats would haunt him while he lied motionless on his bed. And almost like breaking through an illusion, the world would fall completely silent if he moved as if nothing had ever happened, as if the pulses were never there at all.