The debut and the first novel to a codebreaking series by new author Zayd Ahmed, with vibrant illustrations by Rumaysa Ahmed!

When new boy Michael Walker arrives in my class at Yellowhill London School, peculiar and mysterious going-ons begin. If I don't stop Michael in time, the school will never be the same again. With the help of my best friend Alice and an unexpected group of classmates, the fate of the school lies in our hands. Will we beat the odds and dodge the technology that comes our way? Will we defeat Michael and his friends for once and for all?