'The Flash' EP Claims Fans Still Haven't Figured Out the Identity of the Mystery Girl

Flash fans who have been convinced they've figured out the identity of season 4's Mystery Girl might want to go back to the drawing board. Since her appearance in the "Crisis on Earth-X" crossover, the Mystery Girl, played by Jessica Parker Kennedy, has been one of season 4's strangest conundrum with many fans assuming she has to be Iris and Barry's daughter (or granddaughter) from the future. Yet according to one executive producer no one has yet figured out the mystery between the Mystery Girl.