On September 11, 2001, one hijacked plane never reached its target when United 93 crashed in rural Pennsylvania. Now, for the first time, previously classified streams of evidence are combined to piece together what really happened in a gripping minute-by-minute account. Evidence includes secret service documents, air traffic control transmissions, phone records, voicemails, first person testimony, and a top secret audio recording that may reveal the details of Flight 93’s crucial final moments. It’s the story of heroism in the face of tragedy, and it sheds new light on the biggest mysteries of that fateful flight.