Night falls. Bedtime comes. Papa kisses Alex good night. Then he puts on his hard hat. He is an engineer. And he is a night worker.

One night, Papa has a hard hat for his son, and they go out together to be night workers.

Kate Banks’s evocative text and Georg Hallensleben’s colorful paintings combine to make a unique bedtime book that will delight all children, especially those who are fascinated by big machines.