Cas and Meg were able to arrive at Sam's house with no resistance. The silence was deafening. They split up; Cas breaking in the back, and Meg in the front. They synchronized their door opening with the sound of a car driving by, masking the sound of the creaky doors. Cas slid across the floor stealthily. Dead silent, he moved towards the kitchen, knife in hand. As he entered the pitch black kitchen, a light turned on. He looked around, his heart nearly leaping out of his chest. Sam was standing at the entrance of the small room, gripping Meg in a chokehold. "Didn't your mother ever tell you it's rude to come in without knocking?" He glared at Cas, his gaze poisonous.
"I dunno, Sam. Didn't your mom ever tell you killing people is bad? Oh wait, I guess she didn't," Meg retorted. Sam's grip on her tightened, and her face began turning cherry red. Panicking, she futily gasped for breath and clawed at Sam's arm.
"Let her go," Cas demanded.
"Put your knife down slowly or I break the bitches neck," Sam commanded. Cas haltingly stretched out his arm, gently placing the knife on the counter. "That's better." His grip on Meg tightened ever so slightly, just enough so that she could take in some oxygen. "I've been waiting all night. What took you so long?"
"Let her go, and I'll tell you anything you want to know," Cas gruffly begged.
"Why, so she can kill m-" Sam's reply was cut off by Meg's leg breaking free from his. In a flash, she reared her foot into his groin, forcing him to his knees. As he crumpled to the floor, Meg bolted over to Cas, who immediately seized the knife from the counter. He dove on Sam, and dug the knife between his shoulder blades. "No, so I can kill you."
Sam looked at him, eyes burning with hatred, and barely managed to choke out, "Why?"
"Because you killed my father; now I'm going to kill your brother." Sam let out a gurbled, feral cry before going limp and ceasing response. Cas pulled a plastic glove out of his pocket and wrote on the wall, using Sam's blood, YOU'RE NEXT DEAN. He wrapped his arm around Meg's shoulder and escorted her out of the house.