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Founder and President of Inner Citadel Productions 

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Twenty-five years have passed since the death of Mother Teresa of Calcutta, sparking a renewed interest in this spiritual giant of the 20th century. Filmed on 5 continents and featuring unprecedented access to both institutional archives and the apostolates of the Missionaries of Charity, this film reveals not just who Mother Teresa was, but how her singular vision to serve Christ in the poor continues to be realized through the Missionaries of Charity today. This is far more than a documentary film. It is at once a soaring tribute to a spiritual icon, a powerful witness of authentic Christian charity, and a guidepost for all who seek hope in our turbulent times.

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Mother Teresa: No Greater Love (2022)

In the spring of 1945, the Roman Catholic priest inmates of the Dachau Concentration Camp sensed that the Allied victory in the Second World War was imminent. They also believed, however, that the Nazis would never allow them to leave the camp alive. On April 14, they began a novena entrusting their safety to St. Joseph of Kalisz. Unbeknownst to them, on the same day, Heinrich Himmler signed an order for the execution of all Dachau prisoners. Miraculously, Dachau was liberated by Allied troops on April 29, only hours before Himmler’s order was to be carried out. Our Liberator: St. Joseph and the Priests of Dachau tells this remarkable true story, and gives a powerful witness to the power of intercessory prayer.

Our Liberator: St. Joseph and The Priests of Dachau (2023)

This groundbreaking new film exposes a generation of lies and distortion regarding Ngo Dinh Diem. The first president of the Republic of Vietnam, Diem is commonly portrayed as a corrupt and tyrannical leader whose repression of Buddhists, led to a popular uprising against his rule. However, Liberator of Asia reveals a man with rare integrity, a patriot who strove to free his country from Western colonialism while protecting it from Communism. Diem's brutal murder in a US backed coup resembles more a martyrdom than a political murder, and ushered in the Vietnam War. This searing film restores the truth of who Diem was and the deadly price of American hubris.


Liberator of Asia:

The True Story of Ngo Dihn Diem (2022)

In Solidarity with Ukraine (2023)

In Solidarity with Ukraine, an inspiring new film from the Knights of Columbus, see a vivid example of what it means to be a Christian disciple in the midst of war, and how the light of the Gospel continues to shine in the darkness.


David, producing under the banner of his production company Inner Citadel Productions, takes on a limited number of new film projects and television commercials each year. He also offers consultation services on film distribution, story development, and digital media strategy.

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David Naglieri interviews Lord David Alton in London for his film on the Northern Ireland Peace Process. 



David Naglieri is a multiple Emmy-award winning documentary filmmaker whose films have been distributed in more than 90 countries, and critically acclaimed for their combination of extensive and original historical research; cutting edge visual effects; and emotive storytelling. Naglieri is best known for his 2016 feature length documentary Liberating a Continent: John Paul II and the Fall of Communism, which earned 5 Emmy nominations and was hailed as a "documentary masterpiece" by First Things magazine; and for Mother Teresa: No Greater Love a box office smash hit that became the #2 documentary released theatrically in North America in 2022. His subjects explored range from the 2010 earthquake in Haiti to baseball great Gil Hodges; from Pope Francis to Vietnamese President Ngo Dinh Diem. His films have been distributed by PBS, Netflix and ABC, and narrated by the likes of Jim Caviezel, Andy Garcia, and Placido Domingo.


The grandson of Italian immigrants, David collaborated with the Knights of Columbus, Chazz Palminteri and an array of Italian-American civic leaders, in producing the 2020 film Courage and Conviction, which defended the legacy of Christopher Columbus. A 2002 recipient of a PEW fellowship to study the influence of religion on contemporary global affairs, Naglieri holds a Master's Degree in International Relations from Boston University and a Bachelor's Degree in History from Marist College.

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