Arne Dahl

Three Swedish financiers are murdered over three consecutive nights. Evidence suggests that the killings will continue and the world of finance is panicked. The police quickly set up a special unit under the leadership of Detective Jenny Hultin. She hand picks six police officers from across the country and they form the so-called A-group. Under enormous pressure they attempt to solve the case before more finance officers are murdered.

An American serial killer is on board a plane from New York to Stockholm. Without a proper identification and with great urgency A-group try to locate this passenger before Sweden inadvertently imports it's first American serial killer. The serial killer enters Sweden, and very soon he begins his killing spree. His methods are blood thirsty and can be traced back to the Vietnam War. A collaboration with the FBI begins in an desperate attempt to catch him.

Group A are called in to investigate a car bomb in Holland but to their horror a policeman and his family were in the car. Further investigation reveal a link between drugs and child porn so can Group A make the required connection before its too late.

"Many Waters" is a story in two parts with multiple elements. The team is called on to assist Internal Police Investigations when a Minister's son is shot by a police officer. Paul and Kerstin are assigned, but it turns out that Kerstin once had a relationship with the officer. A burglar discovers a suicide that leads to the murders of a serial killer.

A man is found dead, hung from a tree. Another body is found in Skansen's wolverine enclosure. Five girls attempt to flee from Sweden.

Early one morning, a bank office in the middle of Stockholm is hit with a violent robbery. When the police storm the premises, the robbers have vanished without a trace. The event mystifies the A Unit who, under the supervision of US Intelligence, takes the case. When they find a strange hiding place inside one of the bank's walls, with traces of secrets from the days of the Cold War, it soon becomes clear that the bank robbers are just pawns in a larger game. A game that will soon claim more victims.

A brutal attack leads 'A-Unit' to a stash of steroids linked to an organisation Interpol have been investigating. A series of related kidnaps and murders show apparent links to a shared high school experience.

Two Swedish girls have been found dead on the outskirts of Brussels. The circumstances surrounding their deaths point to a vicious trafficking operation and the Swedish branch of the Black Hearts motorcycle gang. When another girl disappears from the same area, A Unit sees a shocking pattern. Shortly thereafter, a suspected kidnapper is found brutally murdered and the connection to Black Hearts becomes even more puzzling. Is someone else behind it? The missing girl's fate now rests entirely in A Unit's hands.

A series of brutal murders of Polish women hiding out in Sweden is the new A Unit's first assignment. The victims turn out to be key witnesses in a big case against the Polish mafia. Three of them are found murdered within a couple of days, and two are missing. The hope is that the missing women are still alive. Chief Inspector Kerstin Holm gets the case, and the hunt for a ruthless murderer and his shady victims begins.

The explosion is powerful and the devastation enormous when a subway train explodes in Stockholm's tunnel system on a November night. The country is in shock. A group calling themselves "The Holy Riders of Siffin" claim responsibility for the attack in an anonymous call that the A Unit manages to trace. They think they are close to an arrest. What they don't know is that this is just the beginning of a hunt framed by political extremism, hate and death.