Karl Keating, a justly popular Catholic apologist and the Founder and President of Catholic Answers, a group of Catholic laity dedicated to the defense of Catholic doctrine, released this excellent compendium of Catholic apologetics over 12 years ago, and it remains one of the very best resources for Catholics who wish to acquire a firm grasp of the discipline of apologetics (from the Greek "apologia": "a defense" [of the Faith]). Beginning with several chapters devoted to the origins of various groups seeking to challenge the Faith of Catholics, Keating presents a detailed overview of many of the last few decades' most outspoken critics of Catholicism, discussing the causes of many Catholics' deserting the ranks of the Church of their upbringing in favor of Protestant denominations. He then proceeds to treat various distinctly Catholic doctrines, first taking into account the Protestant arguments against them individually, in the verbatim words of individual Protestant representatives, and then defending each doctrine against those arguments. The result provides an intriguing opportunity to learn the official Catholic perspective of such doctrines as the Papacy, the Holy Eucharist, the Holy Sacrifice of the Mass, the Sacrament of Confession (Penance or Reconciliation), Purgatory, the role in salvation of works in relation to faith, and other issues of interest to non-Catholics pursuing an authentic understanding of orthodox Catholicism. One can't find a much better synopsis of Catholic apologetics than Keating's "magnum opus," the work which, during the last decade, has inspired many Catholics to study their Faith more closely and to engage in dialogue with those who wish to discuss the issues which continue to distinguish the Protestant and Catholic worlds. I recommend Keating's work very highly.