In this definitive biography, Cristina Siccardi situates the appealing figure of young Pier Giorgio Frassati in early 20th century Turin, Italy. In the ancient capital of the Kingdom of Italy where the memory of Savoy is still alive there are two contrasting forms of enterprise: one of older stamp, attentive to the values of patriotism and integrity; the other tending toward ever more acquisitive forms of capitalism.

In this environment Pier Giorgio, the young heir of Senator Alfredo Frassati, founder of the newspaper La Stampa, makes his own choice for the social doctrine of the Catholic Church, seeking not so much to solve general problems but to make Christ and the Church more present to those in need. That was the motivation for his assisting in many charitable works of the St. Vincent Society, his support for the Popular Party, and his development of a spirituality of engaged and diligent action. His devotion to friendship and to sports was extraordinary, with a special love for mountain hiking, which was for him both enjoyable exercise and the contemplation of creation, as well as a symbol of his striving for perfection in virtue.

Other important aspects that will passionately engage readers of this book include the story of the famous Frassati family, and the marked contrasts among its members—especially the bond of division/union between father and son. Alfredo Frassati, a man of notable accomplishments, will discover, when his widely beloved son dies, a completely new dimension of the world. There follows a spiritual deepening, year after year, which leaves its traces in several letters to Giovanni Battista Montini, the future Pope Paul VI. This book describes an extraordinary itinerary of holiness, but also a key to understanding the history of Italy in the 20th century.

Pope John Paul II said about Pier Giorgio on the day of his Beatification (20 May, 1990):
"Faith and charity, the true driving forces of his existence, made him active and diligent in the milieu in which he lived, in his family, in the university and society; they transformed him into a joyful apostle of Christ, a passionate follower of his message and charity. The secret of his apostolic zeal and holiness is found in the ascetical and spiritual journey which he traveled; in prayer, in persevering adoration of the Blessed Sacrament, in his thirst for the Word of God; in the peaceful acceptance of life's difficulties; in chastity lived as a cheerful, uncompromising discipline."