The Flash: 10 Questions We Need Answered Before The End Of The Season

10. How Will We See Earth-2 Again?

If Season 2 has taught us anything, it’s that time travel was not a one-off gimmick but a recurring storytelling device for the show. With that in mind, it really isn’t so hard to believe that alternate dimensions could play a similar role going forward.

There’s a lot of potential in seeing alternate versions of the characters we love. It let us have Killer Frost without actually ruining Caitlin forever and likewise, it gave us Harrison Wells back after killing him just a season earlier. Earth-2 is also about to provide us with an appearance from their Black Canary, but the means in which she shows up are currently a mystery.

Barry worked hard to close up all of the breaches, but is it possible he missed some? Could Zoom have found a way to break through and Black Canary hijacked it for herself? Considering the fantastical nature of inter-dimensional travel, there would seem to be many possibilities for how it's going to be achieved again.

A gateway to Earth-2 is going to be a crucial plot element in terms of brining Zoom back into direct conflict with Team Flash, and its existence needs to be supported by a thought-out explanation.