Denmark, 2016. A blurred note is found in a bottle that has traveled across the ocean for a long time. After deciphering the cryptic note, Department Q follow a sinister trail that leads them to investigate a case that occurred in 2008. At the same time, new tragic events take place that test their faith and deepest beliefs.
Denmark, 2013. Police officers Carl Mørck and Hafez el-Assad, sole members of Department Q, which is focused on closing cold cases, investigate the disappearance of politician Merete Lynggaard, vanished when she and her brother were traveling aboard a ferry five years ago.
Denmark, 2014. A former police officer asks Carl Mørck, head of Department Q, to find out who brutally killed his young twins in 1994. Although a local inhabitant confessed and was convicted of murder, Carl and his partner Assad soon realize that there is something in the case resolution that is terribly wrong.
In a moment of cowardice, Detective Carl Mørck sends Rose, his junior colleague in Department Q, to the remote Danish island of Bornholm to answer his old colleague Christian Habersaat's repeated requests. But during his forced retirement ceremony Christian kills himself sending Rose into a journey deep into her own traumatic past. Later, Department Q are embroiled into an old cold case of a girl found dead hanging in a tree.
Arn, the son of a high-ranking Swedish nobleman is educated in a monastery and sent to the Holy Land as a knight templar to do penance for a forbidden love.
6th-grader Terkel begins experiencing a streak of bad luck after sitting on a black spider. His teacher dies and is replaced by the strange Justin. At home, Terkel's Uncle Stewart erupts in sporadic fits of rage, and at school Terkel is bullied by two boys after they learn that fat Doris likes him. On a school camping trip, Terkel begins receiving death threats and must figure out who wants to kill him.
Gunman Flame and his partner Citron assassinate Nazi collaborators for the Danish resistance. Assigned targets by their Allies-connected leader, Aksel Winther, they relish the opportunity to begin targeting the Nazis themselves. When they begin to doubt the validity of their assignments, their morally complicated task becomes even more labyrinthine.
Copenhagen, 2018. A frightening discovery is made in an old apartment. The subsequent investigation of Department Q leads them to an infamous institution for girls that was suddenly closed in the early sixties.
An accomplished headhunter risks everything to obtain a valuable painting owned by a former mercenary.
The body of a young woman is found in a Stockholm hotel room. It appears that she has been strangled after a night partying with two young men, but the room was paid for using the credit card of a mugging victim whose alibi doesn't add up. Martin and Gunvald investigate under the supervision of their new boss Klas Freden.
Varg Veum investigates a case where his good friend Even, a highly decorated ex-army officer, is falsely accused of bombing Armakon, a weapons storage facility.
A paparazzi photographer gets brutally murdered in Stockholm. His apartment is searched and the computer together with photo equipment is missing.
An international oil drilling company hires private investigator Varg Veum to find their missing systems designer, Arne Samuelsen. Varg discovers the headless body of a woman jammed into the fridge in Arne's apartment - and is promptly knocked unconscious. When he wakes up the body is gone and the Police has arrived.
Inspector Beck and his team get involved in a large-scale smuggling of cesium 133. A gang from the east uses refugees who with a promise to stay in Sweden and with danger to their own life take in the dangerous explosive chemical substance.
When a well-known crime boss is murdered by a sniper in front of his family, Beck and his team are challenged to discover which one of his many enemies could be responsible for the crime.
A man is found dead, stabbed to death with a knife. The chocking thing is that his face has been removed. After questioning his wife who described the marriage as happy also told that a mysterious foreign man knocked on their door the day before the murder. Beck and his men are given the case.
Beck and his men investigates a murder of a Russian woman. At the same time as SÄPO (The Swedish Security Agency) sees a chance of getting a Russian in the embassy deported.
The bodies of two buried men are found and despite persistent attempts, they cannot be identified. When another man is murdered they discover new evidence that soon leads them to an Islamist terrorist cell.
An elderly woman dies in a hospital in Stockholm and it turns out that she suffered from an incurable disease. Her son refuses to believe that it was the disease that was the primary cause of her death.
A man working at a garbage incinerator discovers the body of a dead man burned to ashes in the oven. Police detective Martin Beck handles the case. All he knows is that a brutal murder has happened. But he does not know when or where. He has no body, motive or a crime scene, not a single trace. All he has is some teeth and a mysterious Internet address...
