Perception

     He looked down at the other man and pressed the gun to his head.  "Don't worry", he whispered, "I won't feel a thing".  He made sure to look his prey in the eye as he squeezed the trigger.  Soon it would all be over.  The man who had ruined his life would be gone for good.   
     As brains painted the wall, he felt an odd sensation.  His life flashed before his eyes.  As he fell, he caught a glimpse in the mirror.  The man had who had ruined his life had been him all along.  The shadow he had been running from for so long had caught up with him and had finally done its job.