Supergirl : Okay. I think I have this. Oliver.
Oliver Queen : Green Arrow.
Supergirl : Dig.
John Diggle : Spartan.
Supergirl : Thea.
Thea Queen : Speedy.
Supergirl : Okay. And Sara.
Sara Lance : White Canary.
Supergirl : Jax and Professor Stein.
Supergirl : Ray.
Ray Palmer : Palmer. The Atom.
Supergirl : And Mick.
Mick Rory : Hmm? Oh. Heat Wave.
Barry Allen : [Stein plays the message he and Jax found on the Waverider] A war is coming, Captain Hunter, and at some point, you're gonna be called back to Central City to fight it, so you need to know that while you and your team have been in the Temporal Zone, I made a choice that affected the timeline. As you know, whenever you alter the past, those changes affect the present and get compounded in the future. When you return, you will be in the new timeline I created, where everyone's past and everyone's future has been affected, including yours. When you come back, don't trust anything or anyone, not even me.
Barry Allen : [listening] Where did you get that from?
Jefferson Jackson : We found it in a secret room inside the Waverider. It was sent by you, forty years from now.
Oliver Queen : Forty years from now? Barry, what the hell does this mean?
Barry Allen : It means I screwed things up when I changed the past.
Dr. Martin Stein : What did you do?
Barry Allen : I went back in time. I saved my mom. I created a timeline where she's alive; it's called Flashpoint, and I lived in it for a few months, and... until I realized that I made a big mistake, and I tried to reset the timeline and put things back to how they're supposed to be, but...
Jefferson Jackson : But it didn't work.
Barry Allen : No.
Oliver Queen : Wow. Barry, that's...
Dr. Martin Stein : So, what's changed since you did this?
Barry Allen : Cisco's brother is dead, Caitlin has powers, Diggle has a son now instead of a daughter.
Oliver Queen : What? John had a daughter?
Barry Allen : I didn't just screw up my life, man, I screwed up everybody's lives. And apparently, everybody's lives in the future.
Dr. Martin Stein : Thank you for joining me, my dear.
Caitlin Snow : Of course. I wasn't being much help back there, anyway.
Dr. Martin Stein : Well, having powers isn't exactly a death sentence, no matter who your doppleganger is.
Caitlin Snow : I attacked my friends, my best friends. And said horrible, horrible things to them.
Dr. Martin Stein : But that wasn't you. And... and believe me, as a person who sometimes shares a body with another human being, I know the difference, and so do your friends.
Caitlin Snow : I'm just so scared. What if she comes back and I can't keep her out? Then what?
Dr. Martin Stein : We'll all be there for you.