When Dr. Harleen Quinzel, a psychologist at Arkham Asylum, falls in love with love The Joker, she transforms herself into Harley Quinn, the Clown Princess of Crime, friend of Poison Ivy, enemy of Batman, and a super villain in her own right.

When an Amateur Detective Convention gets overrun by zombies, Batman and Batgirl team up with the Mystery Inc. gang to get to the bottom of the oddball apocalypse.

When a wicked werecat plagues a big cat park on the outskirts of Gotham City, Mystery Inc. joins forces with Batman to crack the case, but little do they know, more than one crafty kitten is at play in the preserve.

Spider-Man, Thing, Wolverine, Falcon, Storm, and Invisible Woman respond when Dr. Doom sends three Sentinels to three different areas of the city.

Spider-Man enlists the help of his super friends while chasing villains through New York.

There is a big Halloween Party at the Gotham City Museum, and Harley Quinn sees the party as an opportunity to steal some of the Museum's treasures--and it is up to Batman and Nightwing to prevent her from unleashing chaos on the innocent party guests.

"Spinning straight out of the hit Nickelodeon show, these fantastic tales pit the Turtles against villains like Snakeweed, Shredder, and a horde of zombies!"--

When Clayface robs the Gotham City Museum, Batman and Ace the Bat-Hound team up to take down the Mud Menace!

Introduces Scott Lang, known as Ant-Man, and Hope Van Dyne, known as the Wasp, and describes how they use their super-suits to fight super villains.

"How did Supergirl become one of the Earth's greatest super heroes? Discover the story behind Kara Danvers' journey from Superman's kid cousin to full-fledged Justice League member, including the source of her out-of-this-world superpowers"--