Sofia Zetterlund and Lars Magnus Pettersson

Sofia Zetterlund and Lars Magnus Pettersson’s relationship is exposed as a double life: while she imagines a shared future, he has a family with Mia Pettersson and has concealed a vasectomy that made Sofia’s hope of having a child with him impossible. The discovery does not lead to a confrontation or reconciliation. Sofia decides to erase him from her life, then kills him and arranges the scene to look like suicide. The relationship’s decisive significance lies in that passage from private trust to deliberate violence, a reversal the narrative reveals through Sofia’s gradual recognition and the later reconstruction of her actions.

The life Sofia believes they share

For years, Sofia treats Lars Magnus Pettersson as a partner with whom plans can be made. Her imagined future includes taking four weeks off in summer to rent a house in Italy and stopping contraception. Those ordinary proposals acquire a harsher meaning after the truth emerges: she had understood them as steps toward a life together, while he had not been honest about whether that future was possible.

The betrayal reaches back through a decade of the relationship. Sofia describes herself as having spent ten years playing ball alone, believing that Lars Magnus Pettersson was returning the ball when, in fact, he had been standing with his arms at his sides. The image gives shape to the unequal exchange she recognizes in retrospect: she had invested in a mutual partnership, while his apparent participation had concealed a separate life.

One small inconsistency also takes on new weight once she begins asking who he really is. His gnarled hands suggest physical labour, although he has claimed to work in an office. The detail does not itself establish the double life, but it joins the other signs that Sofia now reads as evidence that the man beside her was not the person she thought she knew.

The discovery of another family

The turning point begins with an unknown number found in Lars Magnus Pettersson’s phone. Directory enquiries identify it as belonging to Mia Pettersson at an address in Saltsjöbaden. A nearby listing for Pettersson’s Flowers in Fisksätra deepens Sofia’s suspicion, but she initially tries to believe that the information is a mistake. Her resistance lasts even as the separate name and address make the possibility of another household harder to dismiss.

Then the pieces align. Lars Magnus Pettersson has been maintaining two families: one in Saltsjöbaden with Mia Pettersson, and one with Sofia in their apartment on Södermalm. Sofia understands that Mia has been making love to him throughout their relationship and that the girl associated with that household is his daughter. The family in Saltsjöbaden is not an isolated affair revealed at the margins of their life; it is a parallel domestic world, accompanied by a child and by the flowers business listed under the Pettersson name.

The discovery of a document makes the deception about children especially concrete. While searching the drawers in his study, Sofia finds an appointment notification from Södermalm Hospital, dated nine years earlier, stating that Lars Magnus Pettersson had an appointment in the urology clinic for a vasectomy. She first struggles to understand what she is reading, then realizes that he had been sterilized. For all those years, he had known that he could not give her the child she longed for. His talk in New York about having a baby was therefore not only a lie about his intentions but a promise rendered impossible by a fact he had withheld.

The memory of a Lou Reed album from their hotel bar in New York also changes meaning. Sofia imagines that the record is in his collection in Saltsjöbaden and that he listened to it with Mia instead. What had seemed like a shared memory is pulled into the geography of the other family. In the same way, the appointment notice and the daughter transform abstract suspicions into a connected account of what Lars Magnus Pettersson had concealed.

From grief to severance

Sofia’s immediate response is not a dramatic confrontation. She crumples a bouquet and presses it into a bin outside a bank; the coffee she has bought tastes of nothing and fails to warm her. She tries to stop herself crying and to think about something other than Lars Magnus Pettersson and Mia Pettersson, but the evidence has already altered the meaning of the relationship beyond repair.

She concludes that she has to end things with him. Her decision is expressed as an effort to survive: some things, she recognizes, have to be cut out of one’s life. She intends to regard him as dead to her and to stop thinking or worrying about him. That intention becomes grimly literal. On the drive home she cries so hard that she has to pull over, while sleet on the windscreen merges with her tears. The collapse of the relationship is both emotional and practical: she is grieving the future she had imagined, as well as confronting the fact that its conditions had never been what she believed.

Murder and the false appearance of suicide

The later account reveals that the separation does not remain a decision to withdraw. Sofia’s actions around the killing show preparation. At Södertälje Syd, she goes into a toilet, pulls her hair into a tight bun, puts on stolen glasses, and turns her black coat inside out so that it appears pale brown. She waits on a bench for the commuter train back toward Stockholm and Lars Magnus Pettersson. In the retrospective sequence, there is no explanation she considers sufficient for what he has done; the betrayal is stated plainly, but the narration shows her moving toward an irreversible act rather than a conversation.

She finds Lars Magnus Pettersson lying on his side, his face turned toward the cushions, and positions a dressing-gown belt as a noose. She takes care to place the knot at the back of his neck, where it will leave only a small impression. At the moment when she needs only to pull, she hesitates and assesses whether anything could implicate her. She cannot identify a risk that would expose her, and she proceeds. The account gives the murder the quality of a decision tested in practical terms: the pause is not a change of heart, but part of her consideration of how to carry it out.

Sofia pulls the belt hard. Lars Magnus Pettersson gasps, his response dulled by drink, and never wakes again. She hangs him from a ceiling lamp hook, places a chair beneath him, then pushes telephone directories out from under his feet when she realizes they do not reach the chair. The staged scene is meant to read as a clear suicide. She has also considered the alibi created by the parking attendants, her train ticket, and the conductor who saw her in the buffet car; the phone books on the floor complete the appearance she has constructed.

The relationship thus ends not with mutual recognition but with an asymmetry carried to its extreme. Lars Magnus Pettersson’s concealment leaves Sofia to reconstruct their shared years from addresses, a hospital notice, a remembered album, and the life he maintained elsewhere. Her decision to sever the bond becomes the murder itself, while the staged suicide attempts to hide her agency as thoroughly as his double life had hidden the truth from her.