The Legacy of the Bones

Amaia Salazar returns to the Baztán Valley to untangle a troubling series of suicides that follow a chilling, almost ritual pattern. She believes these deaths are connected to a murder case she solved in Northern Spain a year earlier. Pregnant and preparing to welcome her first child, she steps back into the detective role from The Invisible Guardian, trying to balance the investigation with the heavy burden of her frail, disturbed mother Rosario. The two women occupy opposite corners of a landscape marked by secrecy, trauma, and the weight of family history as Amaia leads a team through a puzzle that blends folklore with real-world violence.

At the City Court, the case takes a brutal turn when Jason Medina, accused of raping, mutilating, and murdering his stepdaughter, is found dead in a bathroom, having slit his wrists. A note in his pocket bears a single word: Tartalo. The shock of the moment coincides with Amaia going into labor, and she gives birth to a boy, Ibai, in the hospital, watched over by her American husband James Westford. The birth is a bright, fragile beacon amid a stormy case, and Amaia carries both a newborn and a renewed sense of purpose as she steps back into active service four months later.

Two new investigations press in on Amaia: one, prompted by Monseñor Landero and Padre Sarasola, asks her to explore the desecration of a small church where an infant’s amputated arm is discovered on the altar; the other involves a man jailed in Logroño who claims he will reveal the location of his wife’s corpse only to Amaia, then dies by suicide after slipping a note to a guard that reads “Tartalo.” The trail tightens as Amaia links this message to a collection of bones unearthed a year earlier, and she grasps that Tartalo points to a pagan legend told during the Spanish Inquisition about a giant who eats Christian babies to prevent them from growing up religious. The mystery widens, and Amaia’s instincts tell her that she is plunging into a history where faith, fear, and violence are interwoven.

Seeking guidance and reassurance, Amaia moves with her family to Elizondo after her Aunt Engrasi mentions a long-abandoned house left by Amaia’s grandmother. The groundskeeper there behaves strangely, greeting nobody and responding only with silence, and Engrasi uses tarot cards to warn that something dark encroaches on Amaia’s life. In this tense solitude, Amaia reaches out to her former mentor, FBI agent Aloisius Dupree, for a strategic perspective, signaling the enduring pull of a professional network that transcends borders. The atmosphere thickens with superstition and doubt, yet the investigation presses on, dragging Amaia deeper into a past she did not know she carried.

The case’s layers begin to intersect with Amaia’s personal life in a startling, almost mythical reversal: the baby she carries is tied to a shockingly intimate truth about her own origins. The narrative pivots with a dramatic double-entry: the infant with the amputated arm shares Amaia’s DNA, revealing that the baby is Amaia’s twin sister—the sister she never knew existed. This revelation reframes every event that led to the present crisis and forces Amaia to confront a family history that was buried in silence, complicity, and long-buried trauma.

As memories and masks slip away, Amaia revisits the painful memory of Rosario and the family’s past. A confrontation unfolds as Rosario attacks a nurse with a scalpel, and Padre Sarasola resurfaces, pressing his influence to move Rosario to a hospital under his direction. In a sequence of psychiatric interviews—each long embedded in memory and recorded—the truth emerges: the doctor involved in the secrets of the house is the groundskeeper’s estranged son, and he has been orchestrating pagan rites that connect the present violence to the family’s darkest myths. The stakes escalate as Rosario’s plan appears to target Amaia’s newborn son, and Amaia is forced to take decisive action.

In the climax, Amaia faces a harrowing moral choice: she shoots to halt a ritual sacrifice and avert a catastrophe that would bind generations to a cycle of vengeance. The revelation that Amaia’s baby is a boy, not a girl as Rosaria had expected, reframes the entire diabolical scheme and confirms that Rosario’s crimes are not just about vengeance but about a larger, inherited legacy. After the confrontation, Rosario vanishes, leaving Amaia to absorb the truth that her mother will not be stopped by a single act.

In the aftermath, Amaia erects a quiet memorial for her twin sister by placing her bones in the backyard of the big house, a symbolic act of rest and recognition that acknowledges a pain too long hidden. Yet the shadow of Rosario remains, a persistent reminder that some pasts refuse to stay buried. The valley’s landscapes endure as witnesses to a story that weaves pregnancy, motherhood, kinship, faith, and folklore into a single, haunting investigation.

The story blends the intimate and the epic: the personal costs of dangerous secrets, the pull of ancestral sins, and the resilience required to protect a newborn while facing a history that could consume a family whole. It is a film about facing the truth you inherit, the ways in which love can sustain you, and the courage to confront a darkness that seeks to redefine what a family means.