"If that were true, you wouldn't have let me into the bathroom, and you wouldn't be here. You knew I was here." He was speaking softly, soothingly, trying to work out what he should do, how to stop this. He could, he supposed, drive a nail into Peter's head, but that would just kill him, and would it stop this laughter from doing it instead? Was it simply a case of waiting it out and hoping that it would stop?

Peter was the only one who could tell him either way, and right now Peter was falling into chuckles all over again, and he looked pale and frightened, as though he was less sure of what to do than Sylar himself. The best he could do was get him over to the edge of the bed, and wrap his arms around Peter's back as though that might somehow stop the trembling, and with his chin against Peter's shoulder wish bloody hatred on the Joker.

"Say the word, and I'll kill him for you, Peter." And what he meant was that he would kill him for himself, but Peter was the one suffering. "I'll make him wish he'd never been born."