"While researching the Arctic for a school project, Robin discovers that something is heating the glaciers--and it's not just global warming. With Batman's help, Robin discovers that the evil Rā's al Ghūl is behind the environmental disruption. The Dynamic Duo head to the Arctic to stop his evil plan and prevent an ecological disaster"-Unedited summary from book.

"Batman has been kidnapped by the Riddler! The crook has left behind one of his infamous riddles, addressed to Robin. If Robin can solve the puzzle, he will locate the Caped Crusader, but that first riddle leads to another. Then the Riddler turns off all the lights in Gotham City. What, Robin wonders, is the point? When will the riddles end? If the Boy Wonder cannot find his partner by the next sunrise, Batman will be gone forever"--P. [4] of cover....

When a series of earthquakes ripple across the planet, a school field trip turns deadly. Students are trapped on a crumbling mountain, and only Superman can rescue them. But the tremors have exposed a large chunk of kryptonite. With the Man of Steel weakened by the radioactive rock, a student must save the day. Who will it be?

Abra Kadabra returns to Earth with plans to use his mind-control machine to brainwash the planet and take over as ruler, and when he captures Superman to utilize the him as the power source for his weapon, the Man of Steel must find a way to escape and shut down the machine.

"On a bright spring morning, a dark cloud of smoke engulfs Gotham City. The fearsome Scarecrow has turned day into night. Surprisingly, the crook doesn't resist Batman's attempt to arrest him. From behind the bars of his cell, the Scarecrow reveals that his evil experiment has already been set in motion. When the black smoke mixes with water, it produces a gas that fills people with fear. A thunderstorm is approaching the city. Can Batman save the...

"Evil genius Lex Luthor is out to capture a deep space probe, which has gathered a large kryptonite meteor! But Superman has been kept busy protecting the city from a rash of crazy crimes. Can the super hero prevent Luthor from getting his hands on the deadly rock?"--Unedited summary from book.

"When animals and people begin to disappear in one of Gotham City's parks, Batman suspects that the deadly Poison Ivy and her creepy plants are at work. But the green villainess is locked behind bars"--P. [4] of cover.

"The Penguin purchases Gotham's largest media company. Meanwhile, a crime wave hits the city. Batman soon learns that these events are related. After the Dark Knight stops a crime, the Penguin's TV news channel edit the security tapes and police reports to make Batman look like a criminal. People begin to fear the Dark Knight. If he can't prove his innocence, the hero will end up in prison, and the Penguin will fly free"--P. [4] of cover.

"Billionaire Bruce Wayne is asked to support the military's newest weapon, the ParaBomb X, a high-tech orb that emits a paralyzing light. But during the weapon's demonstration, a general grabs the orb, crashes through the window, and falls to the street below. Bruce Wayne is stunned. When he looks down at the street, he sees the thief turn into a gooey pile of mud and slip down a storm drain with the stolen weapon. He wasn't a general at all--he was...

Superman is the target of Lex Luthor's deadliest scheme. The cruel genius has poisoned criminal John Corbin. He withholds the antidote until Corbin makes a promise: he will let Luthor turn him into a robot powered by kryptonite. But once the creature named Metallo discovers that he is more machine than human, revenge fills his strange heart.