This book is designed to present an arc: on the one side, at the beginning of the last century, a theology based in the thought of Thomas Aquinas and on the other side, at the century's end, a non-Thomist ‘nuptial mysticism’. The ‘model Thomist’ of the book is Réginald Garrigou-Lagrange (p. 10), those in the middle, who leave such ‘Thomism’ behind, are Chenu, Congar, Schillebeeckx, Lonergan, Rahner and Küng and the advocates of a nuptial theology are de Lubac, John Paul II, von Balthasar and Ratzinger (each of these men has a chapter to himself). That looks like the basis for a solid, informative description of twentieth-century Catholic theology, on the lines marked out by the many objective historical accounts of modern theology and theologians by the author's confrère, Aidan Nichols.