From French author-illustrator duo Richard Marnier and Aude Maurel comes a captivating picture book about creativity, diversity, and self-expression.

This is my town,
simple and typical.

Each house has a door,
two windows, a red roof
--all so predictable

But then one night... someone leaves on their light!
And in the morning, what a shock!
The shutters are sealed tight!

Who is that who lives next door?
We've never seen anything like this before!

In a town where everyone follows the rules, one neighbor's decision to leave the light on at night completely disrupts the neighborhood, sparking a creative revolution. Vibrant, poetic, and fun, Who Left the Light On? playfully teaches the powerful lesson that diversity, creativity, and individuality should be celebrated.