How the Book Ends

The Climax at Thornwood

The climax begins when Jane Trevally receives an urgent message from Stuart Tucker asking her to come to Thornwood so they can talk before involving the police. Jane goes prepared for trouble: she hides a chef’s knife in her bag and a paring knife in her sock, tells her stepson Dexter where she is going, and alerts her neighbor Spencer.

At Thornwood, Stuart introduces Jane to Daisy Black, newly returned from Dorset with bleached hair. Daisy finally explains what she has discovered about her family and her own identity.

During the 2020 lockdown, DI Yasmin Brooks had shown Daisy a photograph of missing music graduate Claire Connolly. Daisy immediately recognized herself in Claire’s features and realized that Claire was almost certainly her biological mother.

Determined to learn the truth, Daisy tracked down her uncle Jasper Black, who was working at Martello’s Circus in Dorset as Patch the Clown. When Daisy confronted him in the woods, Jasper panicked. He admitted that something terrible had happened to Claire but, rather than explain further, attacked Daisy and attempted to strangle her before fleeing.

Daisy returned to Thornwood and confronted her grandmother, Annie Black. The argument became violent when Annie moved to slap Daisy. Daisy pushed her away, sending Annie tumbling down the stairs and breaking her neck. Panicking, Daisy and Stuart concealed Annie’s body inside the locked metal outhouse.

Jane insists that they can no longer keep any of this secret. They wake Jessamine Black from her drunken stupor and tell her that Annie is dead. Instead of collapsing, Jessamine seems almost revived by the news. She tells them to call the police and announces that she will claim responsibility for pushing Annie down the stairs, protecting Daisy from the consequences.

The Horrors Beneath Thornwood

When the police arrive, Jessamine tells them that Thornwood is a “house of horrors.” Investigators search Annie’s study and lift an antique Turkish kilim rug, revealing a trapdoor leading into a hidden subterranean warren beneath the house.

What they find below exposes the true scale of the Black family’s crimes.

Among the remains is Allen Black, still dressed in his bloodstained clothing after being stabbed in the throat and eyes approximately twenty years earlier. Investigators also discover the bodies of seven murdered women: Naomi de Santo, Jody Pinkerton, Susana Perez, Elena Iannou, Jade Paris-Smith, Charaya Kim, and Claire Connolly.

Jessamine explains that Allen had brought women home under the guise of employing “au pairs,” when in reality he imprisoned them underground in leg restraints and sexually exploited them. Claire was one of his captives—and she gave birth to Daisy while trapped at Thornwood.

According to the story Jessamine tells the police, Annie eventually killed Allen out of jealousy over his attachment to Claire. Annie then murdered Claire as well and gave Claire’s newborn daughter to Jessamine to raise as Daisy Black.

For the first time, the secrets literally buried beneath Thornwood are dragged into the light.

Six Months Later

The epilogue reveals what becomes of the surviving characters.

A BBC breaking-news report announces that Jasper Black, thirty-seven, has been found dead in the woods near Little Belmont in Dorset. He died by suicide shortly after his attack on Daisy.

Daisy formally changes her surname by deed poll from Black to Connolly, taking the name of the mother she never had the chance to know. She moves in with Spencer and his son George in the Vale of Health, beginning a life outside Thornwood and outside the identity imposed upon her by the Black family.

Jessamine enters an addiction rehabilitation center in Surrey and awaits trial for Annie’s death, having claimed responsibility for pushing her down the stairs.

Stuart is cleared of criminal involvement. His long vigil at Thornwood finally over, he leaves the house with Hugo and reconnects with the family he abandoned years earlier. After a decade of isolation, he spends Christmas with his daughter Blaise Drummond and his brother.

Jane undergoes an equally important transformation. She sells Rosebery Hall, the decaying estate that has kept her emotionally tied to her parents and her childhood, for somewhere between £1.5 million and £2 million. She plans to move into a smaller London home near the Northern Line with her four dogs.

More importantly, Jane finally gives purpose to the curiosity that has driven the entire novel: she intends to open a private investigation agency with Dexter called Trevally and Son.

The Final Revelation: Eighteen Years Earlier

The novel does not end with Jane, however. Instead, it jumps backward eighteen years to 2008, into the Mayfair office of psychotherapist Dr. Anthony Twist.

During an EMDR session, Jasper is asked to revisit the traumatic events of June 2005. His recovered memory reveals that the version of events Jessamine has just given the police is not the whole truth.

When Jasper entered Thornwood’s underground rooms that night, Allen was already dead.

And Annie had not killed him.

Claire Connolly had.

Claire used a small knife Jasper had secretly given her to stab Allen in the throat, killing the man who had imprisoned and abused her. She had finally fought her way toward freedom.

But Claire never escaped.

After Allen’s death, Jessamine murdered Claire to prevent her from leaving Thornwood with newborn Daisy.

Jasper’s memory therefore delivers the novel’s final and darkest twist: Jessamine was not merely another damaged child trapped inside Allen and Annie’s monstrous household. She became capable of the same violence herself.

The cycle did not end with the previous generation.

It reproduced itself.

What the Ending Means

Thornwood and the Buried Past

The hidden rooms beneath Thornwood provide the novel’s clearest symbol. On the surface, the house belongs to an affluent neighborhood beside Hampstead Heath. Beneath an elegant Turkish rug, however, lies an entire architecture of captivity, murder, and concealed bodies.

The image makes the novel’s central idea literal: respectability exists on the surface while horror survives underneath it.

The trapdoor is therefore more than the entrance to a crime scene. It represents everything the Black family has refused to confront. Their secrets have not disappeared simply because they have been covered over. They have remained beneath their feet, shaping every generation that continued living above them.

The police excavation becomes a kind of forced reckoning. The past cannot finally be healed or escaped until it is physically uncovered.

Two Houses, Two Families

Thornwood and Rosebery Hall mirror one another.

Both are deteriorating family homes inhabited by people unable to separate themselves from the damage of previous generations. Thornwood contains the Black family’s literal buried horrors, while Rosebery Hall represents Jane’s less extreme but still damaging attachment to the neglect and alcoholism of her childhood.

That makes Jane’s decision to sell Rosebery Hall especially important. She does what the Blacks repeatedly failed to do: she stops treating the family home as something that must be preserved simply because it was inherited.

Jane can leave.

And leaving becomes one of the novel’s definitions of survival.

Daisy Connolly and the Reclamation of Identity

Daisy’s name change is one of the ending’s most hopeful acts.

For her entire life, she has carried the surname of the family responsible for her mother’s captivity and death. Becoming Daisy Connolly allows her to reject that imposed identity and deliberately choose where she belongs.

She cannot undo what happened to Claire, but she can refuse to let the Black family determine who she will become.

Her future therefore offers the strongest possibility that the generational cycle might finally be broken.

Jessamine’s Final Contradiction

Jessamine is deliberately left morally complicated.

Her decision to claim responsibility for Annie’s death appears to be an act of maternal sacrifice. Whatever failures defined her relationship with Daisy, she finally chooses to protect the young woman she raised.

But the final flashback radically changes how the reader understands her.

Jessamine is not simply a victim who survived monstrous parents. She also murdered Claire just as Claire was attempting to escape with her baby.

That revelation prevents the ending from offering an easy distinction between victims and perpetrators. Trauma explains how Jessamine was shaped, but it does not erase what she ultimately chose to do.

Her decision to protect Daisy at the end can therefore be read as a belated attempt to do for Daisy what she once refused to do for Claire: allow her to escape.

Jasper and the Clown Mask

Jasper’s Patch the Clown persona reflects his lifelong attempt to hide unbearable memories behind performance.

The clown mask turns his fractured identity into something visible. He can entertain strangers while keeping the horrors of Thornwood compartmentalized behind another face.

But the confrontation with Daisy destroys that separation. She forces Jasper to confront the past he has spent years trying not to remember, and his violent reaction shows that the trauma has never actually been contained.

His eventual suicide gives his story a bleak conclusion: Jasper physically escaped Thornwood, but psychologically he never truly left it.

Hugo as the Accidental Agent of Truth

Hugo plays a surprisingly important symbolic role.

He has no understanding of the secrets connecting these people, yet his wandering brings Jane into contact with Stuart and ultimately draws her toward Thornwood. In a story filled with characters deliberately concealing information, Hugo operates through instinct rather than deception.

His accidental movements help connect two damaged households and begin the chain of events that exposes the truth.

Appropriately, when Stuart finally leaves Thornwood, Hugo leaves with him.

From Claustrophobia to Freedom

Much of the novel is built around confinement: locked rooms, restraints, secret basements, addiction, abusive relationships, decaying houses, and people psychologically trapped by their families.

The ending gradually reverses that pattern.

The trapdoor is opened. The bodies are removed. Daisy leaves Thornwood. Stuart leaves Thornwood. Jane sells Rosebery Hall. Family connections are restored. Hidden identities are reclaimed.

The atmosphere consequently shifts from claustrophobic and paranoid to cathartic and cautiously hopeful.

Not everyone escapes. Jasper cannot, and Jessamine must finally face the consequences of the past. But the younger generation is no longer required to remain imprisoned by what came before.

The Central Theme: What Is Buried Does Not Stay Buried

The ending ultimately ties together the novel’s major themes of generational trauma, identity, domestic secrecy, and the consequences of refusing to confront the past.

Thornwood demonstrates the most extreme version of that idea. Allen’s abuse creates violence in Annie, Jessamine, and Jasper, and those consequences continue into Daisy’s generation. Keeping the crimes secret does not protect the family; it allows the damage to spread.

Jane and Daisy offer the alternative.

Both women finally reject identities built around damaged families. Daisy becomes a Connolly. Jane sells Rosebery Hall and turns her intrusive curiosity—something that might once have seemed like a character flaw—into a profession.

Even Trevally and Son carries that idea forward. Jane is no longer wandering into other people’s mysteries simply because she cannot resist them. She has found a purpose for that instinct and a new relationship with Dexter through which to pursue it.

The final flashback keeps the conclusion from becoming too neat. Just when the secrets appear to have been fully uncovered, the reader learns that even the official explanation is incomplete. Claire killed Allen, and Jessamine killed Claire.

That final reversal reinforces the novel’s darkest point: uncovering the truth is rarely as simple as identifying one monster. Within families built around abuse and secrecy, victims can become perpetrators, lies can survive for decades, and every revelation may conceal another underneath it.

But Daisy and Jane suggest that inheritance does not have to become destiny.

Both finally walk away from the houses that held their histories—and begin choosing what comes next.