La maison biscornue

The war was over, and Charles Hayward, a young diplomat, had returned to England from Cairo, eager to marry Sophia Leonides. But their reunion was overshadowed by a chilling event: Sophia's grandfather, the immensely wealthy Aristide Leonides, had died at his sprawling, eccentric mansion, "Three Gables" - a house as twisted in its architecture as the family who inhabited it. The autopsy revealed not a natural passing, but murder by eserine, a toxic substance derived from his own eye medicine, injected in place of his daily insulin. Sophia, steadfast and resolute, declared that their marriage could not proceed until the killer within her family was unmasked.

Charles, whose father was Assistant Commissioner of Scotland Yard, found himself drawn into the heart of the Leonides family, a dysfunctional clan living under one roof. There was Brenda, Aristide's much younger, glamorous second wife, thirty years his junior, who was rumored to be having an affair with Laurence Brown, the children's sensitive tutor. The family, despising Brenda as a gold-digger, secretly hoped she and Laurence would prove to be the culprits, a convenient scapegoat for their own simmering resentments.

As Charles navigated the labyrinthine dynamics of the household, he observed Sophia's parents, Philip and Magda. Philip, Aristide's eldest son, was bitter and overshadowed by his domineering father, while Magda, a flamboyant actress, treated life as a perpetual stage performance. Then there were the younger generation: the embittered Eustace, still suffering from polio, and his precociously intelligent, twelve-year-old sister, Josephine, who possessed an unnerving obsession with detective stories and a habit of spying on everyone, diligently recording her observations in a secret notebook. Also present was Edith de Haviland, Aristide's brusque, elderly sister-in-law, who had managed the household since his first wife's death.

The police, with Chief Inspector Taverner at the helm, quickly focused on Brenda and Laurence, especially after Charles discovered incriminating love letters between them. They were arrested, and it seemed the case was closed. But the crooked house held more dark secrets. While Brenda and Laurence were in custody, the children's nanny, Janet Rowe, died after drinking a cup of cocoa laced with cyanide, a drink seemingly intended for Josephine. This chilling event confirmed the terrifying truth: the real killer was still among them, and now, a child was being targeted.

The realization sent a fresh wave of fear through the family, and Charles, desperate to protect Josephine, tried to persuade her to reveal what she knew. The young girl, with her keen observations and secret notebook, seemed to hold the key. He knew she had been keeping track of everything, like a self-appointed detective. But Josephine remained elusive, her childlike demeanor masking a deeper, unsettling knowledge.

The climax arrived with a shocking, desperate act. Edith de Haviland, claiming she would take Josephine for an ice cream soda, drove their car off a cliff, killing both herself and the young girl. Back at Three Gables, Charles found two letters from Edith: a suicide note for Chief Inspector Taverner confessing to all three murders, and a second, private letter addressed to Charles. This final, devastating revelation shattered all assumptions.

Edith's letter to Charles confessed the horrifying truth: Josephine was the murderer. The twelve-year-old, frustrated by being ignored and denied ballet lessons, had poisoned her grandfather with eserine, stolen from Laurence's supplies, simply for the perverse thrill and attention. She had then staged her own "accident" with a marble doorstop to divert suspicion and later poisoned the nanny for encouraging her mother to send her away to Switzerland. Edith, discovering Josephine's culpability and unwilling to see the child face imprisonment or asylum, had chosen a tragic, final solution to save the "crooked house" from further scandal and its own twisted soul. The house, indeed, was not just crooked in its structure, but in the very hearts of its inhabitants.