A serial killer that decapitates people is on the loose in the Stockholm subway. Martin Beck and his colleagues try to catch the killer, while the panic in the city increases.

Sara invites her ex-husbands and their new families to celebrate Christmas with her and her husband Janne. Sara has always wanted to have a baby with Janne, and at the dinner table she reveals the news: she's pregnant. The only problem is that Janne had a vasectomy two years ago, without Sara knowing it. The secret starts to spread among the guests, and in no time everyone knows but Sara. The party heads for a complete disaster. Who's the real father?

Harry is a pickpocket, torn between two beloved women, one of them the cop who arrested him, the other the ghost of his dead wife. Is Harry ready for a new relationship? Can a cop date a thief? Harry learns that a jealous ghost can be a nuisance, but shows unexpected bravery.

Erica returns to her hometown for her parents funeral and her childhood friend murdered

"Life and Death" - A female reporter intended to go on a reporting trip about childbirth to Japan, declines the offer. Instead, she visits a maternity hospital in Sweden. She meets a doctor, who she has been in love for 15 years.

A boy finds a dead woman. When police move the corpse they find the skeletons of two women who disappeared in the seventies.

Matti turns 16 and becomes a man, at least in his father's eyes. Matti wanders around Helsinki, and strange people cling to him like flies to sticky flypaper. At the same time, Matti's girlfriend Leila waits for him somewhere.

In a playground in the centre of the urban idyll, the police find a buried wooden box containing a famous and well-respected prosecutor. Martin Beck and his police team initially suspect a highly criminal MC-leader of the attack, but one pretty soon has to re-evaluate the case once the MC-leader is found murdered in a similar wooden box. Soon, more wooden boxes are found and the police realize that they are part of a cat and mouse game with a crazy serial killer. The investigation soon shows that there is a vague connection between the victims in the shape of a 9 year old event, but what Martin Beck does not suspect is that his own life too is at stake, as the murderer has chosen him as the next victim.

After a woman buys a Japanese shunga painting from an auction and later is found murdered in a hotel in Stockholm, the police gets dragged into a murder investigation where they meet the dark side of the art world.

A paparazzi photographer gets brutally murdered in Stockholm. His apartment is searched and the computer together with photo equipment is missing.