John Foxe wrote the first English history of the Ottoman Empire in his magnum opus, The Acts and Monuments. He exceeds contemporary representations in his extremely negative image of Islam and the «Turks,» who are identified as Antichrist and the epitome of wickedness. By juxtaposing Foxe’s work with that of his sources, fascinating conclusions can be drawn. The author analyzes the factors prompting Foxe to insert a lengthy digression on a topic that does not directly concern the main theme of his ecclesiastical history, shedding new light on the established notions of his historiographic methodology and his perception of Catholicism as the greatest enemy of «true religion».