The Flash is pulled into an intense moral dilemma about superpowers-and Keystone's plagued by a menace that's using familiar mind-bending tactics. The Flash is pulled into an intense moral dilemma about superpowers-and Keystone's plagued by a menace that's using familiar mind-bending tactics. The Flash is pulled into an intense moral dilemma about superpowers-and Keystone's plagued by a menace that's using familiar mind-bending tactics.