Accident struck the filming of this series only two weeks into the shooting as one of the leading actors, Jens Albinus, tripped on stage while performing in a play in Copenhagen and broke his leg.
There are several instances in the series where technology becomes the issue of questionable plot devices. One clear-cut plot hole is when, in the fourth episode, we see Sergej track Hallgrim second-by-second on a computer screen using a transmitting device. Later we are told that the transmitter is of a type which only sends a signal every twenty minutes which enables the cops to remove the transmitter and copy its chip without Sergej noticing.
German television airs two of the original one-hour episodes in a row, cut to 100 minutes in total.
Icelandic, French, Swahili, German, Albanian, English, Russian, Norwegian, Swedish, Danish