In the first episode, the crime scheme is compromised by plot holes. The plan seems to depend on a risky diversion which in fact attracts the attention of the police to the crime scene rather than the opposite. It is also not explained why Sandberg, who is wanted by the police, would choose to land his plane in a place where he is sure to be arrested, and the whole criminal plan comes to depend on how he fares in court.
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.