When the supervillain Rainbow Raider seizes control of a gigantic kaleidoscope in Central City, the Flash must find a way to shut it down before the Earth collapses into an accidentally created black hole.

"When one of the Flash's Rogues is murdered inside Iron Heights prison, Barry Allen throws himself deep into the case, still reeling from the turmoil of his personal life! But when the clues begin to reveal an even greater conspiracy at work, the Flash soon discovers Iron Heights' deadliest secret."--

Following "Flash War", Barry Allen remains the Flash, but he's no longer the Fastest Man Alive! With Hunter Zolomon on the run, and new forces such as the Strength, Sage and Still Forces unleashed on the Multiverse, Barry must leave Central City behind and travel the world to learn the secret history of the Speed Force.

"The arrival of the villainous and unimaginably powerful Paradox shows the Flash what happens when ordinary people pay the price in super-powered battles. This high-octane story sees Barry Allen running for his life to save himself, those he loves, and all of reality. When Paradox sends fellow speedster Godspeed after the Flash, the hero's forced to team with his greatest enemy--the Reverse-Flash. With the entire Flash legacy hanging in the balance...