C91 Mastermind Behind everything

Arthur’s pov:-

I stared at him in shock, That person was one of us? Who might it be? I thought while staring at him in surprise.

“Who is it?” I asked,

“I can not tell you that,” he said while turning his head away from me.

“Why?” I yelled,

“If you know who did that why can’t you tell me,” I screamed,

“I can’t…” he shouted,

“If I tell you…