Based on real people
Jiri Markovic drives an orange Lada (VAZ) 2101 and the red car (usually driven by Junior) is a Lada 2107. Dr. Remen drives a GAZ 24 Volga. Pepa Vilimek's broken-down Lada is a blue 2102 Universal. The series shows dozens of era-accurate automobiles including a Barkas van, Polski Fiat 126p, Robur, and Skoda 110 R.
The series features at least two songs by the creative duo Suchy & Slitr: "Purpura" and "Krajina posedla tmou".
Petr Uhlik lost about 20 pounds for his role of Hojer, while Petr Lnenicka had to gain weight to be a more "realistic" Jiri Markovic.
Most characters have been renamed, except for the main investigator Jiri Markovic (and his family), and the killer Ladislav Hojer.