When Scarecrow exposes the Teenage Mutant Ninja Turtles to fear toxin, the heroes face their worst nightmares. Meanwhile, Batman's worst fears have already come true as he takes on the Joker and the super-villain Shredder!

Batman's worst enemies--the Joker, Harley Quinn, and more--have escaped ARkham Asylum. But where have they all gone? The Dark Knight tracks the super-villains to New York City--home of the Teenage Mutant Ninja Turtles!

Batman, Robin, and Batgirl are in New York City--home to the Teenage Mutant Ninja Turtles. When the Mad Hatter plans some mental mischief, Batman and the Ninja Turtles must stop him before he gains control of the entire city.

"DC Comics and IDW team up for the crossover event of the decade! Two of the most iconic entertainment icons meet for the first time in a tale that readers never imagined they would see. In Gotham City, a series of deadly raids leads Batman to believe he is up against a group of highly trained ninjas. As it turns out, the Foot Clan is on the loose. Somehow, they've crossed over to another dimension and are determined to take advantage of the situation...

"The 80th anniversary of Batman collides with the 35th anniversary of the Teenage Mutant Ninja Turtles in this stunning concluding miniseries to the Batman/Teenage Mutant Ninja Turtles trilogy! Our heroes have battled the evil of the Foot Clan in Gotham City and Bane in New York, but now Krang has gotten his hands on the most dangerous technologies in the DC Universe--and no universe is safe from his wrath! As Krang's true power is revealed, it's...

"The all-ages TMNT action continues in this collection of TMNT Adventures! Enjoy classic Turtles tales like "Search and Destroy", "Gimme Danger," "Raw Power," "The Keeper," and "In The Dark." " -- amazon.com.