Top Secret: Hackster focuses on the blundering would-be evil villain Hank Sterns, aka Hackster, as he tries his hardest to hack into The City Bank. But he fails miserably due to his lack of understanding how to code. It's hard to hack a bank using computer programming if you don't know basic coding! Each book in the series focuses on a key STEM concept. Includes educational callouts, sidebars, and backmatter material. Supplemental activity also included.