The Breakthrough (Netflix 2025) is a Swedish limited series that dramatizes, apparently with great fidelity to actual facts, the investigation of a double murder on the streets of Linkoping. a small city in southeastern Sweden. The four episode series is an extremely elegant docu-drama account of the aftermath of the killings, an event that seems to have ruined many lives, including those of the police detectives involved in the investigation. The show is sober, understated, and precise with respect to its effects, themes, and the details that it presents. It is also very economical and modest in scope. The investigation following the double murders was the second largest and longest proceeding of this sort in Swedish history, lasting more than 16 years. But the show makes its points effectively and with powerful emotional resonance in only four episodes none of them longer than 45 minutes. The program is lean, perhaps, even skeletal -- but it doesn't feel diminished or hasty in its presentation of the facts and evidence. (The show directed by Lisa Siwe is similar to an equally ascetic limited series involving far more lurid facts, a torture-murder on a home-made submarine, the subject of the very gloomy and elegant The Investigation, broadcast in Denmark//Sweden in September 2020 and shown in this country on HBO in 2021.) The Breakthrough is a police procedural -- it contains no violence of any kind except for a glimpse of the killings filmed from a remote vantage, and, indeed, scarcely any debate or argument of any sort. No one speaks with raised voices. Everyone is exquisitely polite and civilized. Even the mad killer is muted, taciturn, and well-mannered. The lack of overt drama in the series is necessary because, in fact, the subject matter is so highly charged that any more exploitational approach to the investigation would be either unbearably painful or unwatchably maudlin. The horror of the murders is emphasized by the stillness of the milieu in which they are shown, by the grey monochrome landscapes, and the wan winter light in which most of the events are bathed.
The Breakthrough starts with a gentle Lebanese immigrant, a father discussing the nature of time with his son Adnan. The little boy wants to know how to read the watch that his father has given him and whether time ever comes to a stop. A few minutes later, the little boy is stabbed to death on the way to school by an unknown person on a nondescript residential lane in town. A woman who happens to be out sees the killing and intervenes -- her name is Gunilla. She is also knifed to death. The murderer flees past a woman on a bicycle who clearly sees his face but can't remember what he looks like. (She is later hypnotized, recalls the young man's face, and an identikit image of the killer is produced.) A detective named John is assigned to the case. He meets with the families of the victims and promises that the murderer will be swiftly brought to justice. The Lebanese family is bereft and embittered. The widower of the murdered Gunilla is also devastated. The survivors are mired in grief that they can't overcome. John is something of a local celebrity -- he's a Olympic medalist speedwalker and shown, sometimes, exercising along the river-front and on the streets in town. John's wife is pregnant and the exertions of the investigation destroy his marriage -- he almost misses the birth of his son. A divorce ensues and John later become estranged from his son who blames him for the collapse of the marriage. The investigation stalls. There are no leads at all. We see John putting a single three-ring binder on a shelf in the "war room" at the station where the investigation is underway. A little later, the entire wall is covered in binders, hundreds of them, containing clues and evidence, none of which have led to the identification of the killer.
After 16 years, the officials in the police force decide that in a couple of weeks the investigation will be halted and the murders will be treated as a "cold case." John has learned that a technique involving DNA evidence coupled with genealogical research yielded an arrest in the so-called "Golden State Killer" case in California. He tracks down a DNA and genealogy expert named Per who lives somewhere in rural Sweden, possibly in the woods several hundred miles north of Linkoping. Per is a chubby intense guy who spends his time giving lectures to local genealogy societies, mostly old people meeting in libraries and church basements. He is obsessed with building an universal DNA data base and takes cheek swabs of everyone who attends his programs. Per has personal problems of his own. His daughter is skipping school, apparently terribly depressed, and spends time sitting in the snow in the dark woods. (He is also divorced, it seems, or a widower and lives in a rustic cabin with a woman whom we see schussing about with a rifle packed on her shoulder.) Per is recruited by John and with only a few days before the case is closed, they work continuously to build a genetic profile as to the killer -- the concept is to find DNA matches in previous generations and, then, use genealogy to trace the lineage of the murderer. Per is convinced that this process will always work so long as the DNA sample is reasonably good and there are enough DNA studies in existence from collateral relatives. There are several complications -- initially, the DNA sample is compromised and, further, the entire project is illegal: Swedish law prohibits the use of genetic analysis with respect to persons who are not the immediate subject of an investigation. A journalist is reporting on the investigation and she suspects that it is illegal. Ultimately, with the assistance and complicity (as to bending the law) of several other cops, the investigation yields a suspect. A man is arrested and immediately confesses to the homicides. He is said to be "a very lonely person" with contact only with his brother. By a remarkable, and, apparently actual ,coincidence, he is a cousin to the female journalist, a character who resolves to write a book about the investigation at the end of the film -- this is the source for the movie. John meets with Gunilla's husband and tells him that the crime has been solved. He visits the Lebanese parents and, also, advises that the killer is in custody. The immigrants have had another child, a teenage girl at the time of the solution of the crime -- she is named "Gunilla" after the middle-aged woman who tried to save Adnan. Adnan's father gives John the watch that he had explained to the little boy in the opening scene.
The theme of the movie is stated by Per: all human beings are related; in effect, we are all one family. This makes murder and violence all the more horrific because it always occurs within the human family and is, in effect, fratricidal. Per's utopian vision of a world in which all people are treated as family members, of course, stands in sharp contrast to hatred that caused the homicides. The series is intensely moving, conjuring powerful emotion out of a very minimalist premise. There is a bit of "red herring" that feels slightly contrived -- this sort of misdirection seems "beneath," as it were, the noble themes expressed in the show. The direction is superlative, building up a chilly, precise picture of the investigation from small, but telling, details. In one scene, Per, angry about a lack of police cooperation, storms out of the police station carrying too many books and documents in his hands. He drops a document in a puddle of standing water in a basement garage and this shot has almost visceral effect of chaos and violation on the viewer. In one scene, we see Gunilla's bereft husband lying in bed -- he continues to sleep on his side of the bed and there's a couple books, magazines, a sweater, and his glasses in the place where his wife used to sleep. This is a fine program about crime and punishment; it's deeply humane, avoids sensationalism, and, despite its austerity, very suspenseful and engaging.