[POTENTIAL SPOILERS FOR THE FLASH SEASON 2 MAY LIE BELOW. YOU HAVE BEEN WARNED.]
Alright. So, the trailer for Episode 18 of Season 2 just came out, titled Versus Zoom. And personally, just reading that title fills me with excitement. This is going to be my analysis of the trailer.
1) Zoom seems to be depressed by something or someone.
In the exact starting of the trailer, we see Zoom depressed by something or someone. It could be because he's dying and his 'need for speed' (see what I did there?) has been cut out because there's no way back to E-1. It could also be because of Jay Garrick's death. Possibly, Jay Garrick and Hunter Zolomon could've been twins on E-2. Maybe that's why whenever Cisco touches Jay's hat he vibes about Zoom.
2) Someone in Jay's costume giving a child Jay's hat.
The next scene shows us someone who's NOT Jay Garrick IN Jay Garrick's costume and giving a child Jay's hat. This could either be Jay from the future coming back to give himself his costume and the hat telling younger Jay to "always have faith" in himself. And it could be, that while this scene was taking place, like you have day and night, you have darkness and light, you have Jay and Hunter. Hunter could've been watching this scene and felt left out and angry at his brother, part of which could've acted on his becoming Zoom.
3) Zoom finds a way to E-1 and meets Vibe and Flash.
Zoom finds a portal to E-1 and lands right in front of Barry and Vibe. And I say Vibe, because Cisco is wearing the Vibe goggles. I think what happens is either Flash is about to go through and portal and Zoom appears OR Vibe was tracking Zoom using his goggles which led him and Flash to the portal. Also, they seem to be in some children's hospital. It could also be that Vibe and Flash went to get details on Jay and Hunter.
4) Zoom reveals who he is. AGAIN.
We see Zoom taking off his mask to reveal that his face looks exactly like that of Jay Garrick's, but this time with all of Team Flash present. I think the very first question that Barry asks is "Why. How could you do this to us?" and goes on to yelling "WE TRUSTED YOU, JAY." And then Zolomon speaks up "Jay is DEAD. My name is Hunter Zolomon." Which, again, leads Team Flash to wonder how they look identical if they both are from E-2.
Plus, Barry's expression is priceless.
5) Hunter Zolomon flashbacks.
We get to see flashbacks of Hunter Zolomon and how he went from being a psycho serial killer to a really, really fast psycho serial killer. Maybe they also show us flashbacks of how, if Jay and Hunter really are twins (I think so), they grew apart from each other. One being the hero and the other being the villain. Also, remember how Harry said that he had a hand in creating Zoom? I think this has something to do with when Zolomon was in jail.
6) Zolomon's got a cold heart.
We see Barry yelling at Zolomon "You don't care, HOW MANY PEOPLE YOU KILL?!" and Zolomon calmly and coldly replying, "No, I don't." This sort of proves he doesn't care if his brother is dead, either. He has no regrets killing ANYONE. That's why he didn't even flinch when he got Jay's body to his lair. He just said that it's going to be a complication.
7) Barry's at his fastest, and thinks he can defeat Zoom.
After getting the Speed Force formula from Evil Wells after Flash traveled back in Episode 18, titled Flash Back, Team Flash help Barry get faster than ever before. In fact, Barry becomes fast enough to convince himself that he can defeat Zoom.
And last but not least, my favorite and the scariest part of the trailer.
Zolomon doesn't seem captured anymore and shows that he's got more up his sleeve than Team Flash think. Also, those eyes, man. Soulless.