Adrienne von Speyr (1902-1967) was a Swiss medical doctor, a convert to Catholicism, a mystic, and an author of more than sixty books on spirituality and theology. She collaborated closely with theologian Hans Urs von Balthasar, her confessor for twenty-seven years, and together they founded the Community of Saint John. Among her most important works are Handmaid of the Lord, Man before God, Confession, and her commentaries on the Gospel of Saint John.