This is a Children's Safety Book. This book tells children how to deal with strangers. The "stranger danger" campaign seems to have disappeared but the problem has not.
The authors clearly describe and define a stranger. They are very clear on strategies for behavior if a child is approached by a stranger. They list the more common methods predators use to approach children. As in their book on bullies, their primary defense is to tell a trusted adult. They list trusted adults. The authors use repetition and illustrations to demonstrate their strategies and their scenarios. The protective strategies are clear and easy to explain.
I think the author's use of tests and suggestions for role playing are excellent. As a former teacher and current kindergarten volunteer and I see how successfully repetition is for the younger child.
This book may have been received free of charge from a publisher or a publicist. That will NEVER have a bearing on my recommendations.