“To restore the beauty of holiness to the face of the Bride of Christ, which is terribly disfigured by so many abominable crimes, and if we truly want to free the Church from the fetid swamp into which she has fallen, we must have the courage to tear down the culture of secrecy and publicly confess the truths we have kept hidden.” These bold words from the pen of an archbishop in exile—part of a bombshell exposé published in August 2018 concerning Theodore McCarrick and his circle—catapulted the ecclesiastical diplomat Carlo Maria Viganò to international prominence. In a steady stream of interventions from that time onward, Archbishop Viganò has not only supplied further incriminating details on the current Vatican regime but has extended his critique to the neo-modernism and worldly accommodation that officially entered the Church through the Second Vatican Council. He argues, moreover, that just as there is a “deep state” of wealthy and powerful international elites who exercise enormous sway over political affairs and cultural vectors, so too there is a “deep church” that retains for its advantage the external trappings of religion while pursuing an agenda of error and moral corruption. These pseudo-sovereignties closely collaborate as they work for the same goals, which are, at this point, an open secret. A Voice in the Wilderness collects for the first time all the major writings of Archbishop Viganò from August 2018 to January 2021, with explanatory introductions and notes by Brian M. McCall. Finally available in one place to allow for easy access, assimilation, and debate, it is the definitive edition of an extraordinary body of pronouncements that have stirred up vehement controversy on all sides. Regardless where one stands in its regard, Viganò’s arresting message cannot be ignored. Ultimately, it is one of conversion to Christ the King, the Truth in person, who sets us free from the accumulating slaveries of our time.