What the hell is that supposed to mean?

She has been tracking down and killing all the old agents.

This.

She's already killed 3 agents. He is her fourth victim.

he was the fourth "mysterious drowning victim" that indicates that some has taken note of a connection in 4 deaths .

In Japan number 4 also means Death.

Which is an interesting bit of trivia and might even be important if any of the writers or either of the characters were Japanese.

http://i43.tinypic.com/235qfk.jpg

means ttracy is a wee bit angry i'd say

Did you notice that the WHOLE newspaper has only one small article that repeats itself?

I also thing that she meant exactly that. She is on her way of getting revenge and clean out building 26 and maybe even go further so people would stop chasing and killing specials.

Yea I noticed that lol. But it's a TV show, the only thing that's important is the headline. Remember the articles about Sylar in S1&2?

are we sure it's Nathan & not Barbara?

No, but we're pretty positive it's Tracy and neither Nathan nor Barbara.

1: We were left with a scene that made it clear Tracy wasn't dead.
2: We were left with a BTE that suggested Tracy might be able to return through sewer pipes.
3: We have had no introduction of Barbara at all. Nothing more than a name.
4: The ability to manipulate and travel through water is too close to Cryokinesis to be coincidence.

Hm, Four could also refer to Season 4

wow, very sensible.

I have no problem with #1 and #4. No idea about #2, so I will believe you.
#3 I keep wondering about the commercials with Ali floating or hovering in a while dress with light bulbs all around her.
That is definitely not Niki (or any of her personalities) or Tracy.

I have concluded for the commercial to either have nothing to do with the show or she is Barbara.
(The first lady was wearing very dark glasses which could mean
A.) the sun glasses are a fashion statement of some type,
B.) the first lady was blind, or
C.) if she were the lady in the commercial then light as dull as a room full of light bulbs would cause her to float or hover... then direct sunlight would cause her to ... )

That's the one you want.

I see no reason to bring Barbara into the show, and we have been given absolutely nothing other than a name- no introduction at all. They would most definitely not bring in an Ali Larter character as the big villain, especially one with a grudge against a specific group, without letting us know, somehow, who she is.

It's Tracy.

Definitely Tracy (it's so cool how her power is expanding) and definitely "you're number four" is referring to him being her fourth victim. That wasn't particularly clever dialogue, though. not a big deal because it's just a teaser but Tracy is actually really smart, and I hope she gets some good lines the next season, as per "Cold Snap".

The outlined situation is currently under debate. Issues were selected and are being prioritized on the basis of common agreement. The widest possible latitude is being allowed, to more carefully assess all sailent points. Given the question regarding result determination, great case has been of paramount importance. All interested parties were in attendance, and contributed to the overall result.

It wouldn't be the first time they brought something in and then we see the background of it in the 'flashback' episode (e.g. Building 26 agents came for Barbara and Zimmerman had a heart attack or caught a stray bullet). But judging by what I've heard the writers say about Barbara it seems you're right, they won't bring her in.

as said above. She be killin'

It wouldn't be the first time...when you had to wait a week, maybe two, for the filler information telling us who this character is.

It would be the first time they did it in the season finale as a teaser for the next season.

You mean besides the President? I still don't know if that was Obama or not! j/k

It was Worf. He had some plastic surgery, and then went back in time.

Honestly, I think the role was created because of Obama, but not intended to be Obama. lol

I've thought about it and in the S1 finale it was a samurai with the godsend symbol and in the S2 finale it was Nathan's shooter and the person on the phone with Angela. So no, it wouldn't be the first time.

We weren't intro'd to a new character having a major role in either of the other finales though. Not a character with real face time doing something major.

In S1, we saw the fake Kensei- but not much of him.
In S2...we saw a shadowy figure running away.

That's true.