Jeremy blinked. He was sitting beside a swamp. Green slime covered the murky water. Cold clammy fog tickled his face. Jeremy had just traveled back in time three thousand years. He didn't look any different. He was still wearing his jeans and runners. He didn't feel any different. Except that he was stiff and cold. He looked around for Aristotle. The cat was sitting on a mossy log, washing his fur. "The Underworld sure is foggy," said Jeremy. Aristotle stopped licking. "We aren't in the Underworld yet." He flicked his tail. "You better check the map." In Jeremy and the Enchanted Theatre, Jeremy traveled to Mount Olympus with an orange cat named Aristotle to save Mr. Magnus's theatre, but Zeus only agreed to help Mr. Magnus if he could solve the riddles on three scrolls. Now, in Jeremy in the Underworld, Jeremy is willing to help solve the first riddle, but is he ready to travel into the Underworld to do so? Becky Citra is the author of the Max and Ellie books, Young Readers set in nineteenth-century Upper Canada. She is also the author of Dog Days, a wacky Orca Young Reader about a young boy and his problems with dogs. Becky is a primary school teacher and author of many widely read books for children.