Saint Agnes of Montepulciano is one of the few canonized nuns of the Order of Preachers. Never before has her Life by Blessed Raymond of Capua been translated into the English language. An historically important prototype of the penitential mysticism practiced by Dominican women in the Middle Ages, Agnes is referred to by Saint Catherine of Siena in her letters as "our glorious mother Agnes." It is the task of today's reader to discover what the Life of Agnes has to reveal to us about our journey to holiness, to conformity to Christ. Agnes' administrative feats as Abbess at only fifteen, her admirable compassion and heroic perseverance, the impact of her life on those around her, and the progeny of the mystics who followed in her footsteps reveal to us a sanctity that can still be aspired to today.