Avenge Me, Please

He balled the letter up tightly and squeezed it, letting the angry pained tears run down his cheeks. All his life, his sister had never told him why she was such an angry person. Now, he knew after reading the Dear John letter why his sister left when he was a baby. He tossed the paper to his side and stood, letting the realization hit him like a tidal wave. From afar, the key clicked and the door opened. His dad's voice reverbed down the hallway but he heard nothing. Just the click of his dad's Glock and his angry footsteps.