One lost his son, another his mother, another his brother, another his best friend. Twenty years later, these four men and their families live with the knowledge that they were not told the truth about the murder of their loved ones on September 11, 2001. In the face of overwhelming resistance, they continue to fight for the justice they deserve. The Unspeakable is the story of their pain, their courage, and, above all else, their devotion to those who were taken from them on 9/11.