When Clayface robs the Gotham City Museum, Batman and Ace the Bathound have to stop him--even after he turns into a mud monster in the shape of a Tyrannosaurus rex.
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.
"When monster plants grow out of control, Batman and Batgirl race to rescue Poison Ivy from a . . . Blossom Battle! Will the heroes save the day? Find out in this action-packed chapter book for young readers." --
When Scarecrow's fires his fear toxin into the storm clouds above Gotham City, even Batman is paralyzed by the rain of fear, and it is up to Robin to save the day.