The new exhibit at the Philadelphia children's museum, Let's Play, isn't meant to be shocking-but when one of the installers is zapped with a fatal electrical charge, it's up to Nell to put her detective skills on display.
When the entire collection of the Fireman's Museum ironically goes up in flames, Nell Pratt discovers one of the charred pictures isn't the one that was originally exhibited. But getting to the bottom of the mystery is bound to get Nell burned.