Dr. One-Zero has added a new class to Stately Academy's curriculum. But in "Advanced Chemistry," they only teach one lesson: how to make Green Pop! While their classmates are manufacturing this dangerous soda, the Coders uncover a clue that may lead them to Hopper's missing dad. Is it time to use Professor Bee's most powerful weapon: the Turtle of Light?

From graphic novel superstar (and former computer-programming teacher) Gene Luen Yang, comes Robots & Repeats, the fourth volume of Secret Coders. This wildly entertaining series combines logic puzzles and basic coding instruction with a page-turning mystery plot!

About the Authors

Gene Luen Yang writes, and sometimes draws, comic books and graphic novels. He was named a National Ambassador for Young People’s Literature by the Library of Congress in 2016, and advocates for the importance of reading, especially reading diversely. His graphic novel American Born Chinese, a National Book Award finalist and Printz Award winner, has been adapted into an original series on Disney+. His two-volume graphic novel Boxers & Saints won the LA Times Book Prize and was a National Book Award Finalist. His nonfiction graphic novel, Dragon Hoops, received an Eisner award and a Printz honor. His other comics work includes Secret Coders (with Mike Holmes), The Shadow Hero (with Sonny Liew), and Superman Smashes the Klan and the Avatar: The Last Airbender series (both with Gurihiru). In 2016, he was named a MacArthur Foundation Fellow.

Mike Holmes has drawn for the comics series Secret Coders, Bravest Warriors, Adventure Time, and the viral art project Mikenesses. His books include the True Story collection (2011), This American Drive (2009), and Shenanigans. He lives with a cat named Ella, who is his best buddy.

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