Justice League: Crisis on Two Earths is a 2010 American animated superhero film directed by Lauren Montgomery and Sam Liu and written by Dwayne McDuffie.

The two-disc special edition DVD includes an animated short featuring the Spectre.

Luthor escapes to the Earth of the Justice League by activating a device that enables interdimensional travel.

They escape with the Quantum Trigger, but Batman follows them, battles Superwoman on the Syndicate's Earth and captures her.

Batman returns to the Syndicate's Earth, where Quick dies from the strain of acting as a vibratory conduit.

President Wilson arrests the rest of the Crime Syndicate, and Martian Manhunter says goodbye to Rose to return with the Justice League.

The project was ultimately scrapped by Warner Bros.; however, in 2008, Timm stated that Justice League: Worlds Collide could be released someday in the future.

[8] The World's Finest stated "...the film ranks up there as one of Dwayne McDuffie's better works in the animated DC world and even though it’s reminiscent of stories we’ve seen in animation before, the brilliant work done by Moi, the directing by Sam Liu and Lauren Montgomery, and story make it more than worth watching again.