We All Speak Z is a father and daughter collaboration, written by Melanie Hertling and illustrated by Heiner Hertling. We All Speak Z tells the story of restless children who ask their grandfather for a bedtime story. Instead, Grandpa tells the children a secret; when we sleep, we speak the same language of everyone, everywhere- the language of "Z". When the children realize that this means that they can communicate with anyone they can think of, their imaginations run wild with the possibilities. They find themselves in outer space, under the sea and everywhere in between asking questions and pondering things that they have always wondered about.