Contributor(s): Author: Mac Barnett Illustrator: Mike Lowery The Crown Jewels are in danger... it\'s a howdunit The action in this new adventure is nonstop, as Mac tra.
How did the thief break in? Where did the jewels go? And will Mac be able to solve this locked room mystery before the thief escapes? This mystery isn\'t just a whodunit... again When the jewels go missing from inside a locked room, Mac\'s spy skills are put to the test.
Contributor(s): Author: Mac Barnett Illustrator: Mike Lowery The Crown Jewels are in danger..