This book investigates the contemporary state of 'peril' facing the Roman Catholic Church and proposes a systematic ecclesiological framework to address its mission and future development. Richard Lennan, a professor of systematic theology, utilizes his academic background to analyze the intersection of historical theological movements and modern social pressures. He argues that by re-examining the Catholic tradition, the Church can identify necessary resources to navigate current institutional challenges.

Scholars and theologians frequently cite this work as a rigorous contribution to contemporary ecclesiology. Readers often note the academic density of the prose, which is best suited for those familiar with formal theological discourse.