BWW Recap: One More Surprise Death on the Season Finale of THE FLASH

With the particle accelerator back online, Barry (aka THE FLASH, played by Grant Gustin) speeds towards the end game against Reversel Flash (aka Eobard Thawne, played by Tom Cavanagh) in the season finale "Fast Enough." Have a seat, we'll catch you up to speed.

We open with Barry playing 20 questions with the imprisoned Eobard. Eobard has him deal with the 80 pound gorilla in the room (and we aren't talking about Grodd.

Eobard tells Barry he went back in time to kill Barry's mom because he hates Barry that much. That and the original plan was for Eobard to pull a Terminator and kill Barry before he can grow up to become THE FLASH. Trouble is, Barry also showed up to the back-in-time party to rescue his young self. Denied his victory, Eobard killed Barry's mom as a consolation prize of sorts.

And after five minutes or so in which Eobard recaps the season thus far, he comes down to the deal: help him return to the future and he will help Barry save his mother. It's a tough sell. Seeing as Barry was double-crossed by Captain Cold in the last episode.

Barry leaves Eobard and returns to the rest of his friends. Dr. Martin Stein (Victor Garber) is there for no apparent reason other than to possibly set up next season's spin off show, "DC's Legends of Tomorrow." If your DCLT BINGO card has Stein, mark your card. I'm guessing

Stein calls the offer a paradox. Caitlin (Danielle Panabaker) thinks it is a chance to be with someone you have loved and lost (as she crosses over to her former fiance Ronnie aka Firestorm, played by Robbie Amell). Stein counters that any change Barry makes could have a profound impact. Joe (Jesse L. Martin) reminds him that Barry has already altered the past with only minor changes. Stein counters that was only a day into the past, not 15 years.

Pros and cons: Barry's dad doesn't do time for the murder of his mom, but Barry doesn't live with the West family. Cisco (Carlos Valdes) also mentions that in an altered timeline, Barry might also not meet Cisco. Stein adds that there is really no way of knowing what he will change. Joe remains certain: Barry has to go back in time and save his mom.

Barry pays a visit to prison to see his dad (John Wesley Shipp). Pops isn't so keen on the idea of Barry trying to undo the past.

Ronnie tells Caitlin, meanwhile, that he is back to stay in Central City. "All though I realized sometimes I am more than one man," he says referring to sharing the body of Firestorm with Stein, "I'm not whole unless I'm with you." Awww.

Iris (Candice Patton) meets Barry on the roof where she met him as THE FLASH so many times this season. She asks him if he is going to do it. He wonders if having a timeline in which he doesn't live with Iris and her dad will change how they feel about each other. That and he has had a great life living with them. She tells him to stop thinking about doing what other people want and do what is in his heart.

He returns to the metahuman prison to give Eobard the decision. Eobard first tells him that he still wasn't fast enough, though. "It took you an hour longer to decide than I thought it would."

Still, the plan is revealed. Barry is going to enter the particle accelerator and be the other object to smash into the particle. If Barry is fast enough, it should rupture a hole in the time/space continuum. Of course, if he isn't fast enough, the whole thing could kill him. And that speed is Mach 2. Barry has never run that fast.

Also, to keep his end of the bargain, he'll need Cisco to help build a time machine for Eobard to return to his own timeline. Cisco has to probe Eobard for some intel to build it and then he confronts Eobard about the night in the alternate timeline when Eobard killed him. Eobard is neither surprised nor sorry for killing Cisco in that other timeline ("I'm sure I had my reasons," he says), but it does mean that something he has suspected since the explosion is true: Cisco is a metahuman, capable of seeing through the vibrations of universe and retain knowledge of an altered timeline. And Cisco moves one step closer to becoming Vibe.

Eddie Thawne (Rick Cosnett) is moping around the lab and motions to leave before Stein stops him to tell him everyone has something to contribute. Eddie mentions the paper and that Eobard told him he will make no significant contribution to the world and showed him a newspaper from the future (as if Newspapers will continue to exit in the future). Stein points out that it probably isn't best to believe a villain. Besides, he has a mug that says "Best Boss," and that doesn't make it so.

Moreover, Stein points out the coincidence of Eobard landing in a time and a city of his great, great, great, great, great grandfather is someting even a master scientist from the future couldn't plan for. There is no science to coincidence. Eddie is a wild card in all of this. He is the only one who can truly choose his own future at this point.

And then alarms go off as a result of Stein's projections. Turns out, Barry could also create a black hole and if they are unable to contain it, the end result would be a global catastrophy.

The confront Eobard with this. He tells them he has been planning this for two decades and it will work. Barry has just under two minutes to undo his mother's death and zip back through the wormhole.

Eddie shows up at the newspaper and shares a story of the coincidence that brought Iris and he together (it involves Eddie getting stood up on a date, eating alone and then busting a perp who stole Iris' backback). He tells her that every moment of his life has led to meeting her.

We also have time for a wedding: Caitlin and Ronnie wed (Stein is the official; turns out he is also a rabbi). Cisco is the ring-bearer. "Don't Dream It's Over" is the song playing over the scene. I can't help but suspect that Barry's adventure back in time is going to undo quick a bit more than anyone suspected.

Barry says his goodbyes to everyone. Eobard tells him he holds both their futures in his hands and he belives in him.

Barry zips back in time, prepared to save his mother. His other self stops him from doing what he came back to do. His mom still gets stabbed by Eobard, but he has a chance to speak with her and tell her he grows up to be ok.

Meanwhile, Eobard prepares to leave. A metal hat with the wings of Mercury on it gets tossed out the wormhole (comic book fans will recognize it as the helmet worm by the original golden age Flash, Jay Garrick). Eobard tells them that is his cue to leave.

But not before Barry comes speeding back through the wormhole and smashes the time machine, permanently stranding Eobard in this time. Eobard beats the snot out of Barry and is about to kill him. Eddie shoot himself (thus preventing the birth of Eobard many years later). Eddie dies a hero and Eobard is erased out of existance.

Though Caitlin and Ronnie shut the power to the accelerator down, another wormhole opens above Central City and begins to swallow up buildings, cars and whatnot. Barry decides he has to try and reverse it like he did the tornado back in episode one. Stein tells him he is crazy. He speeds up to stop the wormhole. It appears to close around him. And the season ends on this cliffhanger.

R.I.P. Detective Pretty (Eddie) and Harrison Wells (though, if Eobard never existed, doesn't that mean the real Wells is alive). What did you all think? Comment below and follow me @triggercric and follow @BWWTVWorld for all the latest updates, scoops and recaps.