The trailer for The Flash season 5 released at San Diego Comic-Con 2018 today, showing Barry and Iris dealing with their future daughter’s arrival. In the season 4 finale of The Flash, Barry Allen managed to defeat the Thinker and restored the Elongated Man to life. At the end of the episode, the mystery speedster, played by Jessica Parker Kennedy, arrived to drop a bombshell on Team Flash.
As many fans had predicted, the actress’ character turned out to be Barry and Iris’ daughter from the future – and her name is Nora Allen, named after Barry’s deceased mother. Nora explained to the team that she had made a “big mistake.” And it’s that mistake that likely acts as the setup for season 5.