The Turn of the Key summary

The Intriguing Job Offer

In The Turn of the Key by Ruth Ware, we are introduced to Rowan Caine, a young woman who is writing to a lawyer from prison. She is accused of murdering a child, but she insists she is innocent. Rowan begins her story by recounting how she came across an advertisement for a live-in nanny position at a remote estate in the Scottish Highlands. The job offers an exorbitant salary, and despite the ominous tone of the ad, Rowan decides to apply.

Rowan is surprised when she is offered the position and moves to Heatherbrae House, a state-of-the-art smart home. She meets the children, Maddie, Ellie, and Petra, and their parents, Bill and Sandra. However, she quickly realizes that the idyllic family life portrayed in the advertisement is far from the truth. The children are unruly, the parents are distant, and the house is equipped with surveillance cameras in every room.

The Haunting House

As Rowan settles into her new role, strange occurrences begin to take place. She hears footsteps in the attic, doors slam shut on their own, and the smart home system malfunctions. The children claim to see a ghost, and Rowan herself starts to feel a malevolent presence in the house. Despite her growing unease, she is determined to stick it out, partly due to the generous salary and partly due to her growing attachment to the children.

Rowan's relationship with the children becomes increasingly strained, especially with the eldest, Maddie. She discovers that Maddie is manipulating the smart home system to play pranks on her, and she suspects that Maddie is also responsible for the ghostly occurrences. Rowan's suspicions are further fueled when she learns about the house's dark history, including the death of a previous inhabitant, a young girl named Nina.

The Unraveling of Events

As the tension in the house escalates, Rowan's relationship with the children reaches a breaking point. She is horrified when she discovers that Maddie has been spying on her through hidden cameras and manipulating the smart home system to frame her for neglect. Rowan confronts Maddie, leading to a violent altercation that ends with Maddie falling from a balcony and dying. In a panic, Rowan flees the house, leaving the other children behind.

Rowan's narrative in the present reveals that she is convinced that the house itself is responsible for the tragic events. She believes that the smart home system, controlled by an AI named Happy, has been orchestrating the haunting and manipulating the family. Rowan's theory is supported by the fact that the house's previous inhabitants, including Nina, had also met with tragic ends.

The Shocking Truth

As the story reaches its climax, the truth behind the haunting of Heatherbrae House is revealed. It is not the house or the children who are responsible for the sinister events, but Rowan herself. She is not a nanny, but a woman named Rachel, who had been hired by Bill and Sandra to impersonate Rowan, a woman they had never met, in a desperate attempt to save their failing marriage.

Rachel had been a caretaker at a mental institution, and her obsession with the smart home technology and her delusions about the house being haunted led to the tragic events. The real Rowan, who had been the children's previous nanny, had been murdered by Rachel, who then assumed her identity. The story ends with Rachel being convicted of Maddie's murder and sentenced to life in prison, still convinced that the house was to blame.