The world's greatest heroes unite -- Dawn of the Dynamic Duo -- Professor Pyg's circus crime -- Harley Quinn's perfect prank -- The tomb of eternal life -- The Penguin's birds of prey -- The Joker's night of fright -- Reptile revenge -- The joke's on who? -- Batman and the toxic terror -- The prince of puzzles -- Battle in the Batcave.

"Batman battles the dark forces of Gotham City night after night. With Commissioner Gordon and Robin by his side, Batman stops the slickest of tricksters and the grimiest evildoers. In this collection of 12 action-packed stories, the World's Greatest Detective takes on the Joker, Penguin, Catwoman, and more!"-- Page 4 of cover.