"I've missed this. You just free associating as you work on a case. Do you remember doing that with your head in my lap while I played with your hair?" So many happy memories. For him, anyway. His brilliant detective.

Of course, it should probably annoy him more when the case Sam was working on was him. "Do you know something I don't know?" Good question. He was eager to find out. "I didn't even know there were more of my kind. In labs." He had thought they might have given up after they'd escaped.