With The CW's "The Flash" season 2 coming to an end, Barry is set to meet the Black Siren in episode 22.

"The Flash" season 2 episode 22 is entitled "Invincible." According to Spoilers Guide, the episode will see a shaken Barren, as he meets the Black Canary's Earth-2 doppleganger Black Siren as the Earth-2 meta-humans army leader Zoom unleashed in Central City. With this revelation, the impact of The Flash and Black Siren's crossing paths to both characters is yet to be revealed.

Along with The Flash and Black Siren coming face to face, episode 22 is also set to see Wally go to the streets in an effort to halt the army of meta-humans. This leads Joe to become concerned,as Wally's life could be in danger. Then, the episode is also set to see Iris and Henry worry, as Barry is set to take on Zoom. How they are set to do help is yet to be revealed.

Previously, Barry and the team had to come up with a strategy to deal with the come back of a previous foe in "The Flash" season 2 episode 21, which is entitled "The Runaway Dinosaur." According to Spoilers Guide, the episode saw the return of Girder, who was retracing his acts from his recent attack. In line with his come back, Iris stepped up to act as bait, in order for Girder to be trapped in S.T.A.R. Labs.

"The Flash" season 2 episode 21, "The Runaway Dinosaur," aired on May 10 while episode 22, "Invincible," is set to air on May 17. 

Watch "The Flash" season 2 episode 22 promo trailer.