From graphic novel superstar (and 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.

This is volume 1 in Secret Coders .

There are 112 pages in this book. This is a picture book. A picture book uses pictures and text to tell the story. The number of words varies from zero ('wordless') to around 1k over 32 pages. Picture books are typically aimed at young readers (age 3-6) but can also be aimed at older children (7+). This book was published 2018 by Roaring Brook Press .

Mike Holmes's comics can be seen in Bravest Warriors , Adventure Time , True Story , This American Drive , and Animal Crackers: Cricus Mayhem . THIEN PHAM is a comic book and visual artist, based in the Bay Area. He is also a high school teacher. Pham illustrated Gene Luen Yang's Level Up, a YALSA Great Graphic Novel and New York Times Notable Children's Book . Sumo is his first solo work.