This miniseries tells a story of epic proportions, with powerful themes of holy wars and crusades, torture and terror, the struggle for human rights and dignity. Based on previously unreleased secret documents from European archives, including the Vatican's, SECRET FILES OF THE INQUISITION unveils the true story of the Catholic Church's 500-year struggle to remain the world's only true Christian religion. For more than half a millennium, a system of mass terror reigned. Thousands were subjected to secret courts, torture and punishment.

Filmed in high definition, the four episodes span medieval France, 15th-century Spain, Renaissance Italy and mid-19th-century Europe. The miniseries reveals how the most powerful church on earth created the Inquisition to attack its enemies and preserve the unquestioned authority of the pope. Historians, experts and church authorities advise on the handling of this controversial subject matter.