I can't believe they killed Daphne.

I don't understand what Nathan is trying to accomplish with rounding up some of the heroes but letting others go. In some ways, I guess it is easier to collect everyone with special abilities if you start with the people you know have special abilities, but I don't understand a) how he can justify not rounding himself, or his mother, up, and b) why he would collect people who he knows aren't abusing their powers. Sylar is one thing. Peter I can kinda understand (given the events in the last episode back in December), but Tracy? Matt? Hiro? And if anything, I would think he would try to recruit Mohinder, not capture him.