"The Third Key" by Tatyana Korsakova, summary Automatic translate

Tatyana Korsakova’s 2011 detective novel "The Third Key" is a mystical work in which detective investigation is closely intertwined with family secrets of the past and paranormal phenomena. The narrative centers on the enigmatic story of Count Polonsky’s ancient estate in the village of Antonovka, where a bronze statue of the Sleeping Lady becomes the focus of eerie events that recur across generations. The novel’s atmosphere is built on a combination of psychological thriller and gothic drama, where the past literally comes to life and draws living people into its web.

Return to Antonovka and the discovery in the pond

Successful thirty-two-year-old Moscow journalist Aglaya Vetrova comes to the quiet village of Antonovka to visit her grandmother, Manya. She is trying to recover from a mental crisis caused by the recent tragic events at a Carpathian castle. At the same time, renowned Moscow psychotherapist Mikhail Sviridenko purchases the ancient estate of Count Polonsky. He plans to open a modern rehabilitation center there. His ex-wife, Lyudmila, is taking charge of all restoration work.

To improve the area, Mikhail orders the silted-up count’s pond cleared. Hired scuba divers recover from the bottom a massive bronze statue of the "Sleeping Lady," created a century ago by the Italian engineer and sculptor Antonio Salidato. However, in addition to the ancient monument, grisly remnants of the past are also brought ashore. The bones of Grigory Pugachev, a local shepherd who mysteriously disappeared fifteen years ago, are found on the beach sand. A distinctive metal plate on his skull confirms his identity. Local police officer Pyotr Ogonykov begins an investigation.

A repeat of the nightmare of past years

Soon, a new crime rocked the estate. At dawn, the body of a young local resident, Nastya, who worked in the estate’s kitchen, was found at the foot of the monument, which had been returned to the park. She had been strangled and thrown into the water. Local police officer Pyotr noticed wet footprints leading from the water’s edge to the base of the bronze statue. It seemed as if the heavy statue had moved on its own during the night. Local residents began whispering of an ancient curse.

The tragedy forces the characters to recall events of fifteen years earlier. Back then, a student construction team arrived in Antonovka to help restore the count’s house. Among them was a young medical student, Mikhail, and young Aglaya was spending the holidays with her grandmother. Strong feelings flared between the young people. However, that summer turned into a nightmare: three girls from the team — Rita, Dasha, and their leader, Nadezhda Pavlovna — were cruelly murdered.

The shepherd Pugach, who suffered from seizures after being wounded in Afghanistan, was accused of the previous crimes. His sudden disappearance was considered a flight of the culprit. Aglaya miraculously survived, waking up in the cold water of a pond at night. She remembered nothing due to severe shock and hastily fled to Moscow, cutting off contact with Mikhail. Now that Pugach’s remains have been found at the bottom, it’s clear: the real villain is still at large.

The Secret of the Old Count

Vasily Stepanovich, the estate’s elderly caretaker and former history teacher, shares archival information about the estate’s past. A hundred years ago, Count Ivan Polonsky’s young wife, Olga, fell into a deep lethargy and was mistakenly buried. Rescued from the crypt by her husband and her wet nurse, Ulyana, she survived, but suffered mental deterioration and began wandering at night. Soon after, two of the count’s daughters drowned in a pond. It was discovered that the devoted wet nurse had sacrificed them to save her mistress’s life.

Experiencing a terrible loss, the Count writes in his diary: "Elizabeth is dead. My little girl was strangled and drowned… How to live now, I don’t know." Realizing his mind is clouded by grief, the Count decides to hide the family treasures in the estate. The sculptor Salidato creates three kinetic figures — "The Sleeping Lady" and two "Angels of Sorrow" — with intricate mechanisms inside. Three special keys are required to activate them.

The Count distributed them among trusted individuals: Salidato, his cousin Maria, and the physician Ilya Sviridenko. Due to the revolutionary upheavals, the guardians were never able to gather together to retrieve the treasure.

Keys and a deadly gaze

The heroes come across old photographs taken by Pyotr fifteen years ago. Analyzing them, Mikhail and Aglaya notice an incredible detail: in each photograph, the bronze lady’s head is turned toward her future victim. First, her gaze was directed at Rita, then at Dasha, and finally at Nadezhda Pavlovna. In the most recent photo, which Pyotr managed to take before the attack, the statue looks directly at the police officer himself. That night, an attempt is made on the police officer’s life, inflicting a severe blow to the head.

To uncover the secrets of her past, Aglaya agrees to a hypnosis session conducted by Mikhail. In a trance, she recalls how, during a nocturnal bout of somnambulism, the "Sleeping Lady" herself beckoned her to the water. At the bottom of the pond, Aglaya found an ancient key and hid it in the hollow of a century-old linden tree near the shore. The heroes go to the tree and successfully retrieve the relic. Now they have all three keys: Mikhail has the inheritance of his great-grandfather, a doctor; Sandro, the cook, has the relic of his sculptor ancestor; and Aglaya has the third key, belonging to the Count.

Before revealing the location of the key, Grandma Manya reveals a family secret to Aglaya. It turns out that the girl’s real father was Alexander Polonsky, the grandson of Dmitry Polonsky, the old count’s only surviving son. This makes Aglaya the direct heir to the count’s family and the rightful owner of the ancient relic. This revelation shocks the heroine, helping her realize her deep connection to the estate.

Exposing a Mad Plan

The heroes gather at the monuments and simultaneously turn three keys on the pedestals. The ancient mechanism comes to life: the stone statues begin to move slowly, and long shadows from the setting sun intersect in the center of the lacy gazebo. Having excavated the designated spot, the searchers extract a small iron box. However, instead of precious metals and stones, inside lies only a leather notebook — Count Polonsky’s personal diary. This news breaks the hearts of the elderly caretaker, Vasily Stepanovich.

Under pressure from the evidence, the caretaker confesses to a series of brutal killings. Fifteen years ago, he discovered a mention of the count’s hoard in the archives and decided to seize it at any cost. The appearance of a student group frightened him, and he began killing girls to stage an ancient curse and drive away the intruders. He dealt with the shepherd Pugachev, a witness to his atrocities, and covered up the evidence. Years later, the clearing of the pond and new excavations forced him to resume his bloody harvest.

Vasily Stepanovich launched new attacks, attempting to protect his secret, and brutally wounded Pyotr, who had found Pugachev’s murder weapon — an old chisel. During his emotional confession, the caretaker’s tortured heart gave out, and he died right in Mikhail’s arms. Before his death, the old man managed to repent of his actions, feeling relief at the end of his years of torment.

Legacy of the past

A year passes since the tragic events at the estate. Life in Antonovka is gradually returning to a peaceful course. Petr, the local police officer, has fully recovered and resumes his duties. Lyudmila and Sandro are married and return from their honeymoon. By mutual agreement, the companions break the complex mechanisms of the ancient sculptures, and cast the three keys forever into the deep waters of the count’s pond, so that the souls of the deceased may finally find eternal peace.

Aglaya and Mikhail, now happily married, are examining the Count’s book during their morning walk. Suddenly, a hidden inner layer peels away from the diary’s leather cover. A folded sheet of paper falls to the ground — a detailed map of the estate marked with an X.