Two homeless men were found dead in an abandoned cabin. They were both mutilated and tortured to death. This shocking level of aggression means that the crime investigators are looking for a monster.

Murder of a teacher right in her study in a prestigious local school shocks the community. This case is soon connected to other murders of stabbed women. The investigation gets too personal for second lieutenant Korec and his girlfriend.

Everything starts with a burning car above the city grounds, it turns out that there was a dead body inside the vehicle. Captain Machrák also finds out that his best friend from childhood, now a troubled man, is missing.

A random discovery of an old corpse that was buried in the woods sheds the light on the long forgotten case - unsolved murder from the times of communist regime. Someone is clearly unhappy with this since the killing starts again.

An old man is shot to death in his own living room right before Christmas and the valuable vintage banknote is missing from his apartment. Investigators are extremely quick to find the suspect but something is not quite right.

Autumn in the city is disturbed by a series of murders, every victim was killed by a paratrooper's knife but there is absolutely no connection between them. It almost seems like the unpredictable killer keeps choosing his victims randomly.

A controversial real estate entrepreneur blows up in his car. Turns out he just paid off ransom for his kidnapped wife who was then released by her abductors. The investigation leads to the real perpetrator who was hiding in plain sight.

Machrák and Novotná are on their way to interrogate a medium who says that she has been communicating with a dead body lying in a grave that belongs to someone else. This routine visit ends in tragedy and uncovers a shocking family secret.