Cast & crew
Zero: An Investigation Into 9/11 (2008)
Directed by Francesco Trento, Franco Fracassi Written by Francesco Trento, Giulietto Chiesa, Thomas Torelli, Paolo Jormi Bianchi, Franco Fracassi
Cast
| Dario Fo | Self |
| Tim Sparke | Narrator (voice) |
| Gore Vidal | Self |
| Nafeez Mossadeq Ahmed | Self - professor of contemporary history, University of Sussex |
| Brian Clark | Self |
| Louie Cacchioli | Self |
| Les Jamieson | Self |
| Kevin Ryan | Self |
| Giuseppe Guardabasso | Self - Italian Military Airfield |
| Morris Ghiadoni | Self - fighter pilot, Italian Military Airfield |
| Giulietto Chiesa | Self - journalist, member of the European Parliament |
| Coleen Rowley | Self - FBI agent for 24 years in Minneapolis |
Crew
| Francesco Trento | Director |
| Francesco Trento | Writer |
| Giuseppe Reggio | Production Design |
| Fulvia D'Ottavi | Producer |
| Gabriella Guio | Producer |
| Giulietto Chiesa | Writer |
| Thomas Torelli | Writer |
| Marco Ricchello | Cinematography |
| Franco Fracassi | Director |
| Christian Di Prinzio | Cinematography |
| Paolo Jormi Bianchi | Screenplay |
| Franco Fracassi | Screenplay |
| Vanessa Barreiro | Producer |
| Annalisa Schillaci | Editor |
| Thomas Torelli | Producer |