The First Suicide and the Neighborhood's Fascination
The story opens with the collective 'we' of the neighborhood boys recalling the first suicide attempt by Cecilia Lisbon, the youngest of the five sisters. At just twelve years old, Cecilia slashes her wrists in the bathtub. This event draws intense curiosity from the entire community, particularly the adolescent boys who live across the street. The Lisbon parents, Ronald and Sara, are devout Catholics and become even more protective and withdrawn after this incident. The boys, already captivated by the beauty of the sisters, begin their long, voyeuristic study, collecting artifacts and piecing together fragments of their lives from afar, trying to understand the mystery of the Lisbon household.
The Psychiatrist and the Party
Following Cecilia's first suicide attempt, a psychiatrist recommends that the Lisbon girls be allowed more social freedom. Their parents reluctantly agree to let them host a supervised party at their home. The boys from the neighborhood, including the narrators, are invited. The party is a strange, subdued affair, heavily monitored by Mr. and Mrs. Lisbon. Despite the awkwardness, the boys get their first real glimpse into the sisters' personalities. The evening takes a dark turn when Cecilia, after a period of quiet observation, goes upstairs and jumps out of her bedroom window, impaling herself on the picket fence below. This second, successful suicide devastates the family and further isolates them from the community.
The Strictures and the School Dance
After Cecilia's death, the Lisbon parents become even more reclusive and impose severe restrictions on their remaining four daughters: Lux, Bonnie, Mary, and Therese. The girls are pulled out of school and forbidden from social interactions. The boys, desperate for connection, watch their house constantly. Eventually, Mrs. Lisbon allows the girls to attend the homecoming dance, chaperoned by Mr. Lisbon. At the dance, the sisters are a spectacle, attracting much attention. Lux, the most rebellious, manages to sneak away with Trip Fontaine, the school heartthrob, for an illicit encounter in his car, returning home long after curfew. This act of defiance has severe consequences.
Lux and Trip's Affair and Its Aftermath
Lux Lisbon's late return from the homecoming dance with Trip Fontaine, after being abandoned by him in a field, enrages her parents. This incident is the final straw for Mr. and Mrs. Lisbon, who completely withdraw their daughters from school and all outside contact. The house becomes a fortress, with the girls trapped inside, visible only through brief glimpses from windows. The neighborhood boys are devastated by this enforced isolation, their fascination growing into a desperate longing. They try various methods to communicate with the sisters, including leaving notes, calling their house, and even sending smoke signals, but their efforts are largely met with silence.
The Communication Attempts
With the Lisbon sisters completely confined to their home, the neighborhood boys resort to increasingly elaborate and desperate measures to communicate with them. They use flashlights to send Morse code signals across the street, play records with specific messages over the phone, and even leave notes and gifts on the Lisbon porch. The girls, in turn, respond with their own cryptic signals: a flashing light, a specific song played on the record player, or a piece of paper slipped under the door. These exchanges, though minimal and often misunderstood, fuel the boys' obsession and give them a fragile sense of connection to the girls they idealize.
The Rescue Plan
Driven by their belief that the Lisbon sisters are suffering under their parents' extreme rules, the boys create a daring plan to 'rescue' them. They arrange for a car to be available, gather supplies, and carefully plan an escape route. Their intention is to help the girls flee the oppressive Lisbon house and find freedom. They believe the sisters are longing to escape and will readily join them. This plan is fueled by a romanticized vision of the girls' situation and their own role as heroic saviors, completely unaware of the deeper psychological turmoil within the Lisbon household.
The Night of the Escape (or Not)
On the appointed night, the boys put their rescue plan into action. They slip into the Lisbon house through a window that Lux had supposedly left unlocked for them. Expecting to find the sisters eagerly awaiting their arrival, they are instead met with horrifying discoveries. They find Bonnie hanging in the basement, Therese having overdosed on sleeping pills in the garage, and Mary dead from carbon monoxide poisoning in a running car. The boys quickly realize that their 'rescue' mission has coincided with, or perhaps even inadvertently helped, the sisters' collective suicide pact. Lux is the last sister they encounter, still alive.
Lux's Fate and the Aftermath
After discovering the bodies of Bonnie, Therese, and Mary, the boys find Lux still alive, but she then commits suicide by carbon monoxide poisoning in the garage, completing the sisters' pact. The police and emergency services arrive, confirming the tragic deaths of all five Lisbon sisters. The community is left reeling, unable to comprehend the scale of the tragedy. Mr. and Mrs. Lisbon, broken and grief-stricken, quickly sell their house and move away, leaving behind the shell of their former lives and the haunted memories of their daughters. The neighborhood remains forever marked by the suicides, becoming a site of perpetual speculation and unanswered questions.
The Narrators' Continued Obsession
Decades after the suicides, the collective 'we' of the neighborhood boys, now middle-aged men, remain haunted by the Lisbon sisters. They have carefully collected and preserved every piece of information, every photograph, every rumor related to the girls. They hold regular gatherings to pore over these artifacts, endlessly dissecting the events, trying to find an explanation for the sisters' actions. Their obsession has never waned, it has only deepened with time. They are still trying to piece together the puzzle of the Lisbon girls, forever stuck in the past, unable to fully move on from the mystery that captivated their youth.
The Unanswered Questions
The novel concludes with the narrators admitting their ultimate failure to truly understand the Lisbon suicides. Despite their exhaustive research, their collective memories, and their lifelong obsession, the 'why' remains elusive. They acknowledge that the girls, in their isolation and shared world, remain an impenetrable mystery. The boys are left with a romanticized, almost mythical image of the sisters, forever young and beautiful, embodying a lost innocence and an inexplicable tragedy. Their narrative shows the enduring power of memory and the human need to make sense of the incomprehensible, even when no clear answers are forthcoming.