Mexican Gothic recap

Noemí Taboada travels from Mexico City to High Place after her newly married cousin Catalina writes that her English husband is poisoning her. The decaying mansion is ruled by the eugenics-obsessed Howard Doyle, while Virgil and Florence restrict Catalina and dismiss her fears. Noemí suffers vivid dreams and learns from Francis Doyle and local healer Marta that the family's mine and house conceal a long history of sickness. A fungus throughout High Place links its residents into a collective called the gloom, allowing Howard to dominate the family and prolong his life. Catalina is being controlled, and Noemí is selected to bring new blood into the inbred line through marriage to Francis. With Marta's medicine and help from Catalina and Francis, Noemí resists. They burn High Place and escape as Howard, Virgil, and Florence die. Francis may still carry the fungus, but Noemí chooses to face that uncertain future with him.

In 1950s Mexico City, Noemí Taboada's father receives a desperate letter from her cousin Catalina, who claims her husband is poisoning her and that ghosts move through his remote ancestral home. Arturo sends Noemí to investigate, promising in return to support her academic ambitions. At High Place, an isolated English mansion above the former mining town of El Triunfo, Noemí meets Catalina's husband Virgil Doyle, his commanding cousin Florence, Florence's timid son Francis, and the ancient patriarch Howard. The family imposes rigid rules and limits Catalina's visitors. Catalina appears feverish and frightened, while the family doctor describes her condition as tuberculosis. Howard's talk of bloodlines and eugenics adds another form of menace to the decaying house.

Noemí refuses to accept the Doyles' explanation for Catalina's illness. Her cousin privately asks for help but becomes confused and difficult to reach under medication and supervision. Noemí begins having oppressive, sensual nightmares connected to the house, its damp walls, and the family. Francis offers companionship and shares his interest in the fungi growing around High Place, though he remains afraid of defying Florence and Howard. In town, Noemí seeks information from the healer Marta Duval. Marta's family remembers a mysterious epidemic among workers in the Doyle silver mine and distrusts the official account. She gives Noemí a protective remedy and confirms that the family's long presence has left El Triunfo with reasons to fear the estate.

The boundary between dream and waking life deteriorates for Noemí. She experiences visions, hears sounds within the walls, and feels an unwanted attraction to Virgil that seems imposed by High Place itself. Her investigation of the family cemetery and records leads to Ruth Doyle, Howard's daughter, who killed several relatives and herself rather than accept the marriage arranged for her. The Doyles describe Ruth as unstable, but the history suggests a repeated pattern of coercion within the bloodline. Mold and mushrooms pervade the estate, and Francis's botanical knowledge becomes increasingly relevant. Catalina's behavior alternates between helpless illness and urgent resistance, convincing Noemí that neither ordinary tuberculosis nor grief explains what is happening.

Noemí finds that the family's doctor is part of the closed system protecting High Place rather than an independent safeguard for Catalina. Francis cautiously reveals more of the Doyles' history: marriages within the family, declining fertility, and Howard's determination to preserve the line. Noemí's own health worsens as dreams and waking commands become harder to separate. Attempts to appeal to reason or obtain outside medical help are blocked by Virgil and Florence. Catalina's first letter is no longer an isolated sign of distress but evidence that the household is keeping her captive. Noemí plans to remove her cousin, while Francis is pulled between obedience to his family and a growing willingness to help the visitor who has shown him another possible life.

Noemí learns that leaving High Place is no longer simply a matter of arranging transport. Her exposure to the house has made her ill and susceptible to the same influence that controls Catalina. Marta's remedy briefly clears her mind, confirming that the effect has a physical source, but the Doyles tighten their control. Francis admits that the family is bound to the growth inside the estate and that Howard's power depends on more than wealth or custom. Noemí's value to them lies in her health and her distance from their inbred line. A rescue attempt fails, and the household prepares to absorb her into its plans. Francis must choose whether fear of the collective is stronger than his loyalty to Noemí and Catalina.

The secret of High Place is a vast fungal organism spread through the walls and grounds. It stores memory and carries sensations, dreams, and commands among people connected to it, a shared consciousness the Doyles call the gloom. Howard has used the symbiosis to extend his life and dominate generations of his family. The mine epidemic, the household's isolation, and Ruth's massacre all belong to this history. The bloodline's degeneration now threatens the system, so Howard intends to use Noemí to renew it through a forced marriage to Francis. Catalina has likewise been drugged and controlled rather than merely treated for illness. Noemí pretends submission while the medicine obtained from Marta helps her retain enough independence to coordinate with Francis and Catalina.

During the marriage ritual, the gloom surrounds Noemí with visions designed to erase resistance and bind her to the Doyle collective. Marta's remedy, Francis's defection, and Catalina's returning will allow the three captives to fight back. The confrontation turns the household against itself and destroys Howard's control. Noemí, Catalina, and Francis set High Place ablaze and escape as the mansion and its central fungal growth burn; Howard, Virgil, and Florence do not survive. Catalina is physically free but deeply affected by her captivity. Francis worries that fungal traces within his body could preserve the organism even after the house's destruction. Noemí does not dismiss the danger, but she chooses hope and a future with him rather than accepting the Doyles' belief that heredity must determine every life.

Noemí is forced into the Doyles' marriage ritual with Francis, which is meant to renew the depleted family line and keep both of them within the fungal collective. Protected by Marta's remedy and aided by Francis and Catalina, she resists the hallucinations and commands of the gloom. Their revolt breaks into open violence among Howard, Virgil, Florence, and the captives. Noemí, Catalina, and Francis escape while High Place burns, killing the remaining Doyles and destroying the central growth that sustained Howard's long life and control. Catalina is free but exhausted and will need time to recover. Francis fears that, as a Doyle who has lived in the house's network, he may carry enough of the fungus to let it survive. Noemí accepts the uncertainty rather than abandoning him. The three leave the estate behind with the house destroyed, though the possibility of dormant spores makes their victory hopeful rather than absolute.