The score is you 1, the other team 48.
PRISONER SAYS HE KILLED 48 ACROSS U.S.
The first hint came in a mysterious, chilling letter from a convicted killer taunting prosecutors: "The score is you 1, the other team 48."
Ref. https://www.cnn.com/2006/LAW/07/27/colorado...r.ap/index.html
This person has something wrong in his head, he isn't wired right. Not even people who are considered evil gloat like this. Something is obviously wrong with him. He has no concept of right and wrong in a moral sense. I think he knows killing is wrong, but doesn't have a concept of death. He most likely doesn't fear death himself, or simply can't picture himself being dead. Not a person you want to ever release from prison, he kills via compulsion.