Romanzocriminale D01 Titolo 01 (angolo 1) -
The series is a cult-status Italian crime drama based on the novel by Judge Giancarlo De Cataldo. It follows the "Banda della Magliana," a real-life criminal gang that dominated Rome from the late 1970s to the 1990s.
The reference specifically identifies Disc 01, Title 01 (Angle 1) of the Romanzo Criminale DVD set. In most home media releases, this corresponds to the very first episode of the first season. The Story: Rome’s Criminal Underworld ROMANZOCRIMINALE D01 Titolo 01 (Angolo 1)