The Flash Vol. 2 Speed of Darkness Rebirth

But when Wally decides to prove his abilities to the Flash by investigating reports of a strange creature made of shadows in downtown Central City, he finds himself in a whole world of trouble...literally Suddenly, Flash, Kid Flash and Iris West all become trapped in the Shadowlands of Flashs old nemesis-turned-ally the Shade...only the Shade is no longer in control of his own powers.