USAToday has the first details on the rapidly approaching “Trinity War” crossover. Justice League & Justice League of America writer Geoff Johns will be teaming up with Justice League Dark co-writer Jeff Lemire for this summers event. Check out some details, including the return of a certain lantern artist.

“Trinity War” starts in issue 22 of Justice League, the title by Johns and artists Ivan Reis & Joe Prado. That book will continue to feature characters such as Batman, Superman, Wonder Woman and The Flash. While Jeff Lemire jumps on board Justice League of America as co-writer with Johns, and will have art by former Green Lantern artist Doug Mahnke. That book will star Catwoman, Green Lantern Simon Baz, Green Arrow and Martian Manhunter among others. Lemire will also continue to write Justice League Dark with art by Mikel Janin.

“We really want to find and carve out the Justice League corner of the DC Universe,” Johns says. “It is a universe all itself with these three teams, and it feels big enough to be worthy of a Justice League story.”

“It’s going to be really interesting when these characters do come together, because some of them haven’t met, some of them have, and what happens and unfolds in this is going to force them to choose sides,” Johns adds.

Johns calls “Trinity War” at its core an “action mystery,” and part of that is the involvement of the Trinity of Sin, three characters — Pandora, Phantom Stranger and the Question — who were slapped with eternal punishment centuries ago by a secret circle of wizards but play important roles for each of the three Justice League squads.

The central mystery, conflicts between the teams and assorted plot points of “Trinity War” are all part of one big impending danger that is approaching the DC Universe, says Johns. “It’s not going to end wrapped up in a bow,” he says. “Something really, really major happens that kicks off some pretty crazy stuff at the end of August.”