From graphic novel superstar, former computer programming teacher, and New York Times-bestselling author Gene Luen Yang, Secret Coders: Potions & Parameters is the fifth volume in a wildly entertaining series that combines logic puzzles and basic coding instruction with a page-turning mystery plot!

Dr. One-Zero won't stop until the whole town―no, the whole world―embraces the "true happiness” found in his poisonous potion, Green Pop. And now that he has the Turtle of Light, he’s virtually unstoppable.

There's one weapon that can defeat him: another Turtle of Light. Unfortunately, they can only be found in another dimension! To open a portal to this new world, Hopper, Eni, and Josh's coding skills will be put to the test.

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, was 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).

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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