Guaranteed to make you sleepy.Sophie is an adventurous young girl who notices that whenever she yawns other people yawn too. Does she cause the yawning? Is her yawn traveling from person to person? Throughout the day Sophie noticed that all kinds of different people yawn. Then she notices that something has changed, and her yawn is gone. Where did it go? Will it come back? Finds out how Sophie, with the help of her dog Henry find her yawn again, but be careful reading this book may cause spontaneous yawning and sleepiness in young children and older adults