Trivia / Investigation of a Citizen Above Suspicion

• Fake Nationality: Augusta (Italian) is played by Brazillian actress Florinda Bolkan.
• What Could Have Been: In the mid-80s, Cannon Films purchased the rights to the film to produce an Engish-language remake. It would've starred Al Pacino and Christopher Walken, with a screenplay by Paul Schrader, directed by either Sidney Lumet or Andrei Konchalovsky. It never happened.