The author's main reason for writing this book, however, is simply to provide an introduction to the Mexican commercial cinema for American and other English-speaking readers. Although the United States has been, and continues to be, a major foreign market for Mexican movies, the overwhelming majority of Americans are unaware of them. Mexican films are restricted to the Hispanic theater circuits and shown without English subtitles; therefore anyone wishing to see a Mexican movie would have to be fairly fluent in Spanish. Such a requisite effectively eliminates almost the entire general audience in the United States from exposure to Mexican cinema.