AXEL WALKER, the crazy TRICKSTER, likes toys and gimmicks. And this time he's making mischief using things no one can see. Whether it's oxygen, air pressure, or invisible gas, the TRICKSTER is bubbling over with evil schemes. Only the FLASH can outwit the nefarious knave. But soon, WALKER traps FLASH within a special bubble, a gigantic glass sphere free of friction. Without friction enabling him to move, the FLASH's super-speed doesn't get him anywhere. And the oxygen inside the bubble is quickly running out!
Michael Dahl is the prolific author of the bestselling Goodnight, Baseball picture book and more than 200 other books for children and young adults. He has won the AEP Distinguished Achievement Award three times for his nonfiction, a Teacher's Choice award from Learning magazine, and a Seal of Excellence from the Creative Child Awards. Dahl currently lives in Minneapolis, Minnesota.