The book begins with a parabolic account of a "serendipitous" encounter between J. N. Darby and B. B. Warfield on an Oxford-bound train where the two theologians discover, much to their chagrin, how much they have in common. From thence, the author creates a second parable that takes the reader into a mysterious room where a twice-broken mirror reveals the distorted reflections between infant "baptism" and circumcision. This book is a thoroughly researched, devastating polemic against the errant presuppositions and hermeneutics that underlie paedobaptist covenantalism.