Who killed the quiet boy ?

Part 1

It was the middle of english  class when there were three new students nobody in the room knew them but once the quiet kid seen them he was shocked as if he knew the three boys standing in the front of the class. The three boys introduced themselves they look at the class and they see a familiar face they smirk as the teacher said to take a seat in front of the quiet kid they head over to their seat and sit down class then went on

??? pov
the teacher stopped talking for a second and I hear her sa well students welcome three students who just joined this class and school i look up to see who they were and when I saw all three of them I panicked..what are they doing here? Why now ? I could see some of the kids in my class looked at me with a worried expression. All I knew was that I was shocked to see them. When they finished introducing themselves as the teacher told them to sit in front of me they smirk I noticed first looked around until they spotted me all I thought about is they are going to kill me they are going to hurt me...why now? What did I do wrong ? is this the end of my calm yet less troublesome year ? once they sat in front of me  could feel my blood run cold. I was now waiting for class to end so I can rush out and go to the bathroom and hide..I really don't want to be here i really don't...