Following the airing of its episode 18, it seems that fans of "The Flash" would have to wait until April 25 at 8 pm EST for the show's new episodes. It can be recalled that The Flash was heading to the future to find out who is Savitar in order to stop him before the villain wreaks more damage. That said, entitled as "The Once and Future Flash," episode 19's promotional trailer is allegedly about Killer Frost trying to warn the protagonist that he will be surprised by how things turn out after her arrival.

'The Flash' Season 3 Episode 19

As "The Flash" Season 3, episode 19 is set to return on primetime, International Business Times reports that the show's executive producer, Andrew Kreisberg, said that a few recurring villains will put in an appearance in the finale. In one of his statements, Kreisberg explains that regarding the show's plot, there always has been a plan for everyone, whether the viewers enjoy it or not. In addition, Kreisberg confirms that they are truly excited about how these revelations will turn out and how everything gets wrapped up by the end of the year.

Furthermore, according to Carter Matt, "The Flash" Season 3, Episode 19 could also mark an opportunity to start to learn a little bit more about Savitar, including his potential of being the villain. In the upcoming episode 19, Barry still doesn't know a way to beat him which starts the dilemma for the show's protagonist. However, it should be noted that he's really just toying with everyone as he slowly watches his plan unravel.

Ultimately, beyond these known facts, it turns out that majority of the season is still heavily under wraps. On the other hand, Killer Frost's huge impact with the upcoming "The Flash" Season 3, episode 19 and the show's future should also be noted.