I'm not catholic, but I can't let this go without challenging it. Source?
Start with Foxes Book of Martyrs - perhaps go on to read Rome and the Bible - D Cloud then any of these:
Betts, John T. A Glance at the Italian Inquisition: A sketch of Pietro Carnesecchi: His trial before the supreme court of the papal inquisition at Rome, and his martyrdom in 1566. Trans. from German by John T. Betts. London: The Religious Tract Society. 1885.
Blomfield, E. The History of The Martyrs: or an Authentic Narration of the Sufferings of the Church of Christ in Every Part of the World from the Age of the Apostles to the Present Time. 2 Volumes. Suffolk: Brightly & Co, 1810.
Braght, Thieleman Janszoon van (1625-1664). The Bloody Theater or Martyrs Mirror of the Defenseless Christians Who Baptized Only upon Confession of Faith, and Who Suffered and Died for the Testimony of Jesus, Their Saviour, from the Time of Christ to the Year A.D. 1600. Trans. from Dutch by Joseph F. Sohm. Scottdale, Penn.: Herald Press, 3rd English edition 1886.
Brearely, Mary. Hugo Gurgeny: Prisoner of the Lisbon Inquisition. New Haven, CT: Yale University Press, 1948.
Caulfield, James. The History of the Gun-Powder Plot: with several historical circumstances prior to that event, connecting the plots of the Roman Catholics to re-establish popery in this Kingdom. Digested and arranged from authentic materials. 1st edition. London: printed by N. Biggs, Cranecourt, Fleet Street, for Vernor and Hood, 31, Poultry, 1804.
Dellon, M. An Account of the Inquisition at Goa in India. Translated from the French of M. Dellon, Who Was Confined Two Years in Its Cells with an appendix, containing An Account of the Escape of Archibald Bower (one of the Inquisitors,) from the Inquisition at Macerata in Italy. London: Printed for Baldwin, Cradock, and Joy, 1815.
Foxe, John (1516-1587). Acts and Monuments of matters most special and memorable, happening in the Church, with an universal Historie of the same; wherein is set forth at large, the whole race and course of the Church, from the primitive age to these later times of ours, with the bloody times, horrible troubles, and great persecutions against the true martyrs of Christ, fought and wrought as well as by heathen Emperors, as now lately practised by Romish Prelates, especially in this Realm of England and Scotland. Unabridged. 3 vol. Also contains The Life of John Foxe by his son, Joannis.. London: printed for the Company of Stationers, 1641.
Book of Martyrs; or A History of the Lives, Sufferings, and Triumphant Deaths, of the primitive as well as Protestant Martyrs; from the commencement of Christianity, to the latest periods of pagan and popish persecution. Abridged. Alterations and additions by Charles A. Goodrich. Hartford: Philemon Canfield, 1830.
Freethought Press Association. The Story of the Inquisition. New York: Freethought Press Association, 1928.
Froude, James Anthony (1818-1894). History of England from the Fall of Wolsey to the Defeat of the Spanish Armada. 12 vol. London: Longmans, Green, and Co., 1893.
Ivimey, Joseph (1773-1834). History of the English Baptists. 4 vol. London: 1811.
Lea, Henry Charles (1825-1909). Chapters from the Religious History of Spain Connected with the Inquisition. Philadelphia: Lea Brothers & Co., 1890, first edition.
———. The Inquisition of the Middle Ages. 3 vol. New York: Russell & Russell, 1955.
The Inquisition in the Spanish Dependencies: Sicily, Naples, Sardinia, Milan, the Canaries, Mexico, Peru, New Granada. New York: Macmillan, 1908.
———. Studies in Church History. Philadelphia: Henry C. Lea‘s Son & Co., 1883.
Limborch, Phillipus van. The History of the Inquisition; to which is prefixed, a large introduction concerning the rise and progress of persecution. Trans. by Samuel Chandler (1693-1766). London, 1731.
Luyken, Jan (1649-1712). The Drama of the Martyrs. Lancaster, PA: Mennonite Historical Associates, 1975.
Luzzi, Giovanni. The Struggle for Christian Truth in Italy. New York: Fleming H. Revell, 1913
M‘Crie, Thomas (1772-1835). History of the Progress and Suppression of the Reformation in Italy in the Sixteenth Century: including a sketch of the history of the Reformation in the Grisons. Edinburgh: William Blackwood and Sons, 1856.
Mayer, Hans Eberhard (1932- ). The Crusades. trans. by John Gillingham. Oxford: Oxford University Press, 1972,1988.
Mora, Herreros de. The Inquisition Revived: A narrative by Dn. Angel Herreros de Mora of his Imprisonment by the Tribunal of Faith. Trans. By W.H. Rule. New York: Anson D.F. Randolph, 1857.
O‘Flaherty, T.J. Letters on the Spanish Inquisition. Boston: Patrick Donahoe, 1843.
Pattison, Thomas Cranmer and the English Reformation 1489-1556. New York: G.P. Putnam, 1904.
Puigblanch, D. Antonio. The Inquisition Unmasked: being an historical and philosophical account of that ... tribunal, founded on authentic documents. Trans. from Spanish by W. Walton. 2 vol. London: Printed for Baldwin, Cradock, and Joy, Paternoster-Row; and J. Booth, Duke-Street, Portland-Place, 1816.
Ranke, Leopold Von (1795-1896). History of the Popes: Their Church and State. 3 Vol. Translated by E. Fowler. NY: The Colonial Press, 1901.
Religious Tract Society. The Inquisition in Spain, and Other Countries. London: The Religious Tract Society, n.d.
———. The Jesuits: A Historical Sketch. London: The Religious Tract Society, n.d.
Roth, Cecil. The Spanish Inquisition. New York: W.W. Norton & Company, 1964.
Rule, William Harris. History of the Inquisition, from Its Establishment in the Twelfth Century to its Extinction in the Nineteenth. 2 vol. London: Hamilton, Adams & Co. 1874.
Schaff, Philip (1819-1893). History of the Christian Church. 8 Vol. Grand Rapids: Wm. B. Eerdmans Publishing, 1910.
Shoberl, Frederic. Persecutions of Popery: Historical Narratives of the Most Remarkable Persecutions Occasioned by the Intolerance of the Church of Rome. 2 vol. London: Richard Bentley, 1844.
Sime, William. History of the Inquisition from Its Establishment until the Present Time. Philadelphia: Presbyterian Board of Publication, 1913.
Stockdale, John Joseph. The History of the Inquisitions; including the secret transactions of those horrific tribunals. London: Printed for J.J. Stockdale, 1810.
Symons, Arthur. Incredible Adventures of Giuseppe Pignata, Who Escaped from the Prisons of the Inquisition of Rome, 1693. Published in French in Cologne 1725. Trans. into English by Arthur Symons. New York: Sears Publishing Company, n.d.
Thompson, John Henderson. A Cloud of Witnesses for the Royal Prerogatives of Jesus Christ; being the last speeches and testimonies of those who have suffered for the truth in Scotland since the year 1680. Edinburgh: Schenck & M‘Farlane, 1871.
Turberville, Arthur Stanley (1888-1945). The Spanish Inquisition. London: Thornton Butterworth, Ltd., 1932.
Turnley, Joseph. Popery In Power, or the Spirit of the Vatican; to which Is Added, Priestcraft, or the Monarch of the Middle Ages; A Drama. London: Effingham Wilson, 1850.
Vedder, Henry Clay (1853-1935). Our New Testament: How Did We Get It? Philadelphia: The Griffith & Rowland Press, 1908.
Verrill, A. Hyatt. The Inquisition. New York, London: D. Appleton and Co., 1931.
Waddington, George. A History of the Church from the Earliest Ages to the Reformation. New York: Harper & Brothers, 1834.
White, Henry. The Massacre of St. Bartholomew. London, 1868.
Wright, Akins. A History of the Principal and Most Distinguished Martyrs in the Different Ages of the World; Giving an Account of Their Birth, Life, sufferings and Death; and Particularly Their Dying Words in Testimony of That Religion Which They Professed. Cincinnati: R. Houck, 1830.
Wylie, James Aitken (1808-1890). History of Protestantism. 3 vol. London.
———. History of the Waldenses. London: Cassell & Company, Limited, 4th ed., c1860
———. The Papacy: Its History, Dogmas, Genius, and Prospects. London: Hamilton, Adams & Co., 1888.