Hartley Sawyer

While Barry and Iris deal with a heartbreaking loss, the team faces their greatest threat yet - one that threatens to destroy all of Central City. Meanwhile, Killer Frost has a brush with death that results in an unexpected new dynamic that will change her relationship with Caitlin forever.

With the arrival of Barry and Iris' speedster daughter, Nora, who arrived from the future admitting to having made a "big mistake", things are anything but the status quo. Will parenthood be the challenge that finally slows The Flash down?