The first volume of Lea’s monumental work on the Inquisition of Spain, covering its origin and establishment and its relations with the state. Also included are appendices listing Tribunals, Inquisitors-General, and Spanish coinage.

The fourth and final volume of Lea's monumental work on the Spanish Inquisition. This volume discusses how the Inquisition dealt with mysticism, solicitation of illicit relationships, bigamy, theological propositions, witchcraft and sorcery, political activity, and almost every other facet of daily life. It concludes with an overarching history of the Inquisition and retrospective.

The 3rd volume of Lea's monumental work on the Spanish Inquisition. This volume covers torture practices; the trial process; punishments; Jews, Moriscos, and Protestants; and censorship. - Summary by Sienna