There are 3 episodes left. It's actually a 23 episode season and last night was chapter 20.
I loved the show, but I'm getting to hate time travel movies in my old age. Too many bad Star Trek Temporal Mechanics episodes I guess.
I found it to be really interesting that in that timeline Mohinder, Parkman and the Haitian were all working for "Nathan" against the other heroes (can we just call them mutants yet?
). I could see Parkman becoming jaded but it seemed like a lot of things were going against what Mohinder believed in.
Anyway, Time Warner cable was having some issues last night and I missed a minute or so of Hiro talking to himself at Isaac's apartment so I might have missed this. But I thought that the future Hiro believed he had killed Sylar but didn't stop the bomb. So, in his timeline did he kill Nathan, thinking it was Sylar, and that allowed Sylar to use Candice's power to imitate Nathan?
Not knowing exactly what all powers Sylar has accumulated, my thought on killing him would be to get Peter to sneak up on him, freeze time and incinerate him with Ted's powers. Having Hiro decapitate him would also rate high on the list...followed by the incineration cause he needs to burn.