• Milan, Lombardia, Italy (subway scenes)

  • Galleria Umberto I, Turin, Piedmont, Italy (Tobias follows the man in black)

  • Spoleto, Perugia, Umbria, Italy (theatre interiors: Tobias fights the man in black)

  • Giardino Lamarmora - Via Cernaia, Turin, Piedmont, Italy (scene during opening credits: Tobias notices being followed)

  • Galleria Subalpina, Turin, Piedmont, Italy (private detective's office)

  • Rome, Lazio, Italy

  • Turin, Piedmont, Italy

  • Auditorium RAI - Piazza Rossaro, Turin, Piedmont, Italy (studio) (recording studio)

  • Conservatorio G. Verdi - Piazza Giambattista Bodoni, Turin, Piedmont, Italy (theatre exteriors)

  • 23 Vialle dell'Esperanto, E.U.R., Rome, Lazio, Italy (Tobias' house)

  • 45 Via Collegno, Turin, Piedmont, Italy (killer's palace exteriors)

  • Incir De Paolis Studios, Rome, Lazio, Italy (studio)

  • Villa Crespi - 17 Via Giuseppe Antonio Guattani, Rome, Lazio, Italy (Villa Rapidi, mental institution)

  • Kairouan, Tunisia (recurring dream of the execution at the Great Mosque)

  • Ponte Guglielmo Marconi, Rome, Lazio, Italy (Dio's shack on the Tiber banks)

  • La Villa d'Este, Tivoli, Rome, Lazio, Italy (park where the maid is murdered)