In one scene, Mr. Hawkins' secretary makes a call nearby a construction site. The scene was shot in 2003 and the current Palace of Arts (Muveszetek Palotaja) was just being built at the time.
The scene, where Keszeg is smoking and receives a mysterious phone call and only his contours are visible, was later added in the film and was not featured in the original script.
The prison in the film was actually a military barracks. Unfortunately the iron door in the scene was locked all along, so the stone corridor seen in the finished film, as well as the closing the door, were all computer generated visual effects.
In the scene where Dave and his junkie buddy are watching TV, the voices of Gábor Szöllöskei and Elemér Sipos Szabó can be heard during the commercials. They also uttered the voices of two presenters of the radio broadcast in the editorial office. In addition, the voice of TV12 was also Gábor Szöllöskei.
In the scene where Tarkowsky and his thugs torture András, according to the original scenario, a Hungarian soap opera goes on TV, but by the time it was filmed, the filmmakers thought a more actual torture would be a reality show.