The work, written by oblate missionary David López Moreno and published by Editrice Missionari OMI, spans 729 pages and focuses on the order's establishment in Pozuelo de Alarcón during the 1920s. The book also addresses the subsequent martyrdom of about twenty of these religious men, which occurred between Aravaca and Paracuellos, alongside the Catholic trade unionist Cándido Castán.

The volume highlights the importance of the Pozuelo railway station in shaping the town's urban landscape, dividing it into two zones: the Station, inhabited by immigrants from Madrid and railway workers, and the Town, populated by locals such as farmers and small landowners. These divisions were even reflected in local groups like 'La Liga Obrera' and 'La Inseparable'.

The author, David López Moreno, reflects on the tragic events of the summer of 1936, avoiding the simplification of 'both sides' and emphasizing the death of unarmed oblates. The book draws on sources such as 'History of the Religious Persecution in Spain, 1936-1939' by Monsignor Montero, and analyzes the figure of Manuel Azaña, defending his stance for the state's non-confessionalism and criticizing misinterpretations of his speech.

Furthermore, the work highlights the existence of a 'fifth column' that helped save the lives of some of the detained oblates. The book, of great interest due to its proximity to Pozuelo de Alarcón and its connection to the Civil War, aims to serve as a vaccine against Spanish 'fury'.