'The Flash' Season 2 Episode 22 Spoilers, News & Updates: Villains Unite Against Barry; Will Caitlyn Turn Evil? Sneak Peek Released

As "The Flash" Season 2 gets closer to the finale, more major developments are being revealed and explored. In episode 21 "Runaway Dinosaur," Barry Allen regained his powers, Wally West was exposed to the Particle Accelerator, Girder was resurrected and Zoom asks Caitlin Snow who she will side with. So what can we expect for "The Flash" Season 2 Episode 22?

Caitlin Snow Chooses Between The Flash And Zoom

you have no idea how much i wanted to see black siren and killer frost together i feel so blessed #TheFlash pic.twitter.com/Ne9o2kiIRg

— ❄️⚡️ (@SnowsCanary) May 11, 2016

One of the most important developments to watch out for in the last few episodes of "The Flash" Season 2 is Caitlin Snow's decision. If she decides to stay with Barry Allen, then she will continue as a great ally and hero. But if she chooses to side with Zoom, her path to becoming the villainous Killer Frost might become a reality.

Zoom's Earth-1 Army

Zoom prepares his final gambit on #TheFlash https://t.co/96a66ZgJGS pic.twitter.com/XKooBIqOEs — Comic Book Resources (@CBR) May 11, 2016

Another exciting development that can cause a lot of trouble for our heroes in "The Flash" Season 2 is the superhuman army that Zoom brought from a parallel Earth. Some of the DC characters that are part of Zoom's army against the Flash are Earth-2 versions of the Red Hood, Atomic Skull, Vigilante, Captain Cold, Heatwave, Hawkgirl and Wally West.

Wally West = Kid Flash?

@KeiynanLonsdale KID FLASH! ⚡️ I'm so excited! #TheFlash pic.twitter.com/rXtBoQQ3or

— WestAllen Source (@WestallenSource) May 4, 2016

But what about the Earth-1 Wally West? "The Flash" Season 2 Episode 21 showed Wally being exposed to the Particle Accelerator but he did not seem to have gained any super powers from this event.

But was he just bluffing? Might we finally see Wally West become Kid Flash and become a great sidekick for Barry Allen's The Flash as he fights against Zoom's superhuman army? "The Flash" Season 2 Episode 22 will air on May 17 on The CW network, according to Den of Geek.