Evil :welcome to the world of darkness

Description of book "Evil :welcome to the world of darkness "

What happen when a new guy come to ur class?
Everything was going well but things changes after a new guy came to the school
Joseph Harrison was the new guy and he made many friends. But suddenly after some days the environment kinda change. There was a change in the students behavior but why? Who is this Harrison? And why all of our friends are changing like this? Are they entering in the world of darkness