Being that the author works for the Phoenix Police Department, the majority of Spanish speakers there are from Mexico. This book was written using the author's experience in talking to Spanish speaking subjects living in or visiting Phoenix. The author is not a Spanish professor but wrote this book focusing on terminology that will be understood on the street. The book contains closed ended questions for a variety of investigations including assault/domestic violence, robbery, stolen vehicles, burglary, drug possession/sales cases, traffic stops, traffic accidents. The most important part of this book is the high risk stop/contact commands. This book is written for the officers who have little to no understanding/knowledge of the Spanish language, as well as offering information to those who do have a basic understanding/knowledge of Spanish. It is the author's desire that this book allow officers to conduct their jobs safer.