In March the Church celebrates the great mysteries of Christ's Incarnation, Passion and Resurrection. These core mysteries of faith have recently been explored in a new way by a spiritual teacher and theologian, Hans Urs von Balthasar, whose monumental life's work was partly an attempt to bring mysticism back into the official theology of the Catholic Church. Saward's book concerns the heart of the Christian revelation, and at the same time serves as an introduction to Balthasar's thought. In particular, he shows Holy Saturday - the period between the Death and Resurrection of Christ - to be full of meaning for the life of faith, and the source of some of the most intriguing and controversial questions in theology today.