Benny put his hand out for Sam to shake. As soon as Sam touched his freezing cold hand, he saw the look of contempt in Sam's eye. He saw him go for his blade. In a way, he hoped he would, but he saw Dean signal him no. Sam didn't look happy about it, but he laid off. Benny just had to bide his time. Killing Sam was part of the plan. Benny was going to get to do it, and he would savor every second of it. And then Dean would be all his.