They just aired another heroes sneak peak, this time Sylar was standing behind her so she swung around with a knife at him. Then you hear the narrator say "Now nobody can save her." or "Nobody can save her now." then it shows Claire against the wall screaming.

I have heard rumors that Hayden might be leaving the show, will this be the end of Claire? Was it inevitable from the beginning that Sylar would achieve one his ultimate goals? Might this cause an unbalance in the time lines causing characters from alternate universes get exchanged.

Discuss please.

Any rumors that Hayden's leaving the show are pretty much ridiculous. Not a single official, or even semi-official, source has found a single hint of it.

The fact is, the scene you're talking about seems to be coming from one of the first episodes- and yet, we have pictures of her working with both Sylar and HRG. Kind of hard to be dead and still moving around.

Hayden is not leaving the show. In previous promos we've seen alot of the Heroes 'dead' and it appears that they are dead in a future or dream sequence. If you happen to see Claire die then it is likely in that context....and she's not dead dead. On the other hand, according to spoilers, in the present timeline Claire is supposed to go through a very traumatic attack in the by another SG (probably Sylar) which changes her and may lead to the 'badass' Claire that we see in the future. So what you saw may either be part of a future sequence or the 'traumatic attack' that has a profound affect on her.

That's just NBC playing with your head.They cut those clips together and can make you think one thing and the exact oposite happens.Spoilers I have seen have Sylar working with HRG.So Sylar walks in Clairefraks out and HRG say it's ok he's with me