Top Secret: ChemX focuses on the blundering would-be evil villain Chet Michael Xander, aka ChemX, as he attempts to take over The City by making its water supply highly acidic. But he fails miserably due to his lack of knowledge about basic chemistry. It's hard to take over a city using chemistry if you don't know the basics! Each book in the series focuses on a key STEM concept. Includes educational callouts, sidebars, and backmatter material. Supplemental activity also included.