Moxie McCoy goes undercover to solve a mystery in the third book of this critically acclaimed, laugh-out-loud funny middle-grade series. Moxie, a fourth-grade detective, joins the Wonder Scouts to investigate a suspected saboteur in the badge competition. Despite never liking the Wonder Scouts, Moxie becomes enchanted with earning badges herself! Meanwhile, someone has broken into Tiddlywhump's Local House of History, and it's up to Moxie's little brother, Milton, to begin his own investigation. Can this irrepressible detective duo crack two different cases? Richly illustrated by Robbi Behr, Matthew Swanson's Wonder Undercover is a must-have for young readers who love humorous mysteries about family, siblings, and girl power. Don't miss the other mysteries in The Real McCoys series: The Real McCoys The Real McCoys: Two's a Crowd An Imprint Book Praise for The Real McCoys: A Junior Library Guild Selection "Readers will breeze through this ingenious combination of text and art, eager for Moxie and Milton's next case." —School Library Journal, starred review Praise for The Real McCoys: Two's a Crowd "An outstanding, truly unique reading experience." —Booklist