'The Flash' Finale: Should Barry Save His Mother?

How many more people might die if Barry's mother lives?
The Flash S01 Finale - H 2015

The Flash is about to reach the finish line. 

Season one concludes Tuesday, with the episode beginning with Barry (Grant Gustin) having captured Reverse-Flash (Tom Cavanagh) and faced with a big decision: Should he travel back in time to save his mother's life?

That question has lingered for much of the season, after Barry learned he (as an adult) was present when his mother died 15 years ago, and also discovering that he can time travel by running really, really fast. But there could be big consequences if he does save his mother. For one — he might never meet his STAR Labs friends, and he might never become The Flash in the first place. As has been asked in the show, how many more people could die if Barry's mother lives? 

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Ahead of the finale, here are four other burning questions the episode must answer.

1. Will Barry harm the future by changing the past?

In Back to the Future, Marty McFly (Michael J. Fox) carried around a photograph of his family — each of them beginning to disappear as he changed certain things in the past. Something akin to that may happen in the finale, with Cisco (Carlos Valdes) saying in the trailer, "he's being erased from existence," as Barry begins to fade. Could Barry's changes in the past erase him in the present? 

2. Why is Eobard doing all of this?

Viewers know Eobard wants to get home. But why did he travel back in time in the first place?  Cavanagh promises all will be revealed in the finale, previously telling The Hollywood Reporter, "We're not looking to shortchange people." In a preview clip, Thawne reveals he will be born 136 years from now — and monologues about why he killed Barry's mother.

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"Because I hate you. Not you now. You years from now," Thawne says. "We're enemies, rivals, opposites, reverses of one another … neither of us was strong enough to defeat the other, until I learned your secret. I learned your name."

Could we potentially get a sense of the future as well?

"In comic books, when you start talking about time travel — if anybody has followed The Flash, then they know Reverse-Flash and The Flash are not just doing this right now in the present day," Gustin told THR back in January. "They have a long history, and there's nothing that we're not going to pursue when we try to tell the story. We're trying to tell all of it."

Will Caitlin's wedding stick?

The previews show Caitlin (Danielle Panabaker) marrying longtime (and previously presumed dead) finance Ronnie Raymond (Robbie Amell). But is this for real, or is it a fakeout, like the first time Barry and Iris (Candice Patton) kissed? With Barry going back in time, it's easy to imagine the wedding being erased from the timeline, as Amell's half of Firestorm appears to be pulling away from the CW superhero universe rather than strengthening his ties to it. His counterpart Dr. Martin Stein (Victor Garber) is on board for the spinoff Legends of Tomorrow, which features heroes and villains from The Flash and Arrow, but Ronnie is not among the list of regular characters. Will the finale explain why that might be the case? 

Will there be season two teases?

The executive producers have said the show is eyeing other speedsters such as Wally West or Bart Allen for season two. It's also possible season two will see Caitlin transform into the villain Killer Frost, who in the comics has powers similar to X-Men's Ice Man, except she craves heat (that's where Firestorm come in handy).

During a Reddit AMA last week, Panabaker said this about the villain: "From the beginning I knew that Caitlin Snow becomes Killer Frost. And I can't wait to suit up and duke it out with the boys!"

What are your theories for The Flash finale? Share your best in the comments, and stay tuned to The Live Feed for more from the finale.

The Flash airs Tuesdays at 8 p.m. on The CW. 

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