'The Calling of Dan Matthews' is a crime novel authored by Harold Bell Wright. It told the story of a young preacher who resigned from the ministry in order to retain his integrity. The book is inspired by Wright's own life, who used to be a preacher before resigning. In many of his writings, he attacked the hypocrisy and impractical nature of popular churches. To Wright, hard work, integrity and concrete efforts to aid people in need were far more important than church doctrines or sermons.