Interesting feature film that combines two, not one, real life mysteries. The main tale is about emergence of Enrico Mattei and his growing clout in Italy and the world, after propagating the underground methane reserves in Italy to alleviate poverty in Italy, post-Word War II. Though Mattei was a member of ths Christian Democrats Party during the war he was appointed after the war to dismantle AGIP, a petroleum agency set up by the Fascists. He found scientific studies already conducted but shelved about methane reserves and subsequently converted AGIP which he was supposed to dismantle into a major state-owned powerful petroleum company called ANI. Rosi's film presents both the negative and the positive sides of Mattei, who was by all accounts killed in a plane crash in 1962, possibly with a bomb placed on board the aircraft.
The secondary tale (also real) is of Rosi employing an investigative journalist, Mauro de Mauro, to figure out the last days of Mattei. Mauro, too, is killed before he can provide all the details of his investigation to filmmaker Rosi for making this film. Two separate but possibly linked killings. The viewer is left to guess the killers. The second tale lifts up the quality of the film even further than the first. Rosi is admirable for presenting all views of both the killings.
A film that won a deserving Golden Palm at Cannes Festival. The real heroes of the film are Mauro, the journalist who was killed while helping Rosi, the scriptwriters. Tonino Guerra, Rosi and Tito di Stefano.