This is the third graphic novel in the Secret Coders series by Gene Luen Yang and Mike Holmes. Hopper, Eni and Josh dig into Stately Academy's past, and the puzzles they solve are real coding logic problems woven into the story. It suits kids around ages 8 to 12 who like comics and want a story with brainwork, and it works best for readers who already finished the first two books. Compared with plain coding workbooks, it teaches through narrative rather than drills, so the lessons stick for story-driven readers but offer less structured practice.
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Readers of the series enjoy the mix of mystery and real coding puzzles, and kids often try the logic problems themselves. Parents say it keeps young readers hooked, though some note it works best after the first two books.
The story is set at Stately Academy, which was once home to an elite institute where teachers, students, and robots worked together to unravel the mysteries of coding.
Hopper, Eni, and Josh want to learn the whole story of the school's past. They are not the only ones interested in it.
