The Flash showrunner has revealed a surprising detail about the season eight finale.
The Flash will return for a ninth season in 2023.
He said that this “hopefully gives some weight and drama” to the finale as it gives off the sense that “this really is the final battle between Flash and Negative Reverse-Flash”.
Among its surprises included a showdown between Grant Gustin’s protagonist and his longtime enemy, Negative Reverse-Flash (Tom Cavanagh).