Batman and The Flash Go To [SPOILER] In The Button, Part 2

Spoilers ahead for The Flash #21, out today.

After a brief meeting with the "Flashpoint Batman," Thomas Wayne of the alternate timeline created when The Flash traveled into the past to save his mother, Batman found himself standing face to face with a tangible, permanent version of the Flashpoint Batman at the end of today's issue of The Flash.

Barry and Bruce, attempting to track a missing piece of evidence (the Comedian's bloddy button from Watchmen) and learn the truth about who killed Eobard Thawne, ran across the last person to have killed him: Flashpoint Batman, who stabbed an immobile Thawne in the back during the Flashpoint miniseries in 2011.

That certainly wasn't on purpose, as a baffled Bruce and an increasingly paranoid Barry were surprised to find their way around the Batcave on Earth-Flashpoint before finally realizing where they were and what was going on.

And with the Cosmic Treadmill destroyed, it may be nearly impossible for Barry and Bruce to return home without seeking help from Eobard Thawne himself -- who is likely still alive in Flashpoint because time travel hurts all of our brains.

What's next? Well, it's hard to say, but here's the solicitation text for next week's Batman #22:

"THE BUTTON" part three! The cataclysmic events of DC UNIVERSE: REBIRTH #1 continue here! The Dark Knight and The Fastest Man Alive, the two greatest detectives on any world, unite to explore the mystery behind a certain blood-stained smiley button embedded in the Batcave wall. What starts as a simple investigation turns deadly when the secrets of the button prove irresistible to an unwelcome third party—and it's not who anyone suspects! It's a mystery woven through time, and the ticking clock starts here!

You can pick up a copy of The Flash #21 at your local comic shop today, or buy a digital copy here.