Flash 21 -

: Believing Kid Flash might be linked to a series of Speed Force murders, Barry chases the bratty teen across the globe.

: In this timeline, Wally West has become a "war general," sending speedster copies of himself on suicide missions to defeat the villain Eclipso. Flash 21

One of the most famous versions of The Flash #21 was published in 2017 as the second part of " The Button ". This storyline directly connected the world of the Flash to the mysterious Watchmen universe. : Believing Kid Flash might be linked to

: Barry Allen and Bruce Wayne team up to investigate a blood-stained smiley face button found in the Batcave. Flash 21