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Meet Eliza Boom—assistant inventor, junior spy, and full-on fantastic—as she tells all in this first book of a chapter book series packed with jokes, doodles, and dear-diary secrets!

Eliza Boom is having a blast. Her father is an inventor who makes gadgets for spies, and Eliza is his unofficial assistant…very unofficial.

Eliza knows if she can just build that one indispensable thing that every secret agent needs, she can be a full-fledged spy herself, but somehow her inventions keep going wr...