Can Flash continue to invest in its new relationship without revealing to Iris its dual identity? The fastest man in the world may not have time to ask itself the question for a long time, because already its worst enemy is back, and the Nega-Flash knows that the secret of its opponent is its greatest weakness. Eobard Thawne's new mission is to reveal to Iris Barry's secret, and to do so, he has planned a trip to the 20th century, where Iris will be able to understand who is hiding behind the mask of the Scarlet Light... Contains the US episodes: - The Flash #23-32