This little book is a detective novel meant for students of Spanish. It uses Castillian Spanish (European). The realistic dialogue with common idioms and current slang makes it especially appropriate for young learners. The plot, characters, and resolution are not particularly well developed, but they are not the intent of the writer. The book's main purpose is to teach the language, which it does quite well.
This book came as promised and in great condition. However, if you are looking for light reading or a way to get a better understanding of Spanish. I would not recommend this book, it is dated and the story it cheesy at best.