‘The Truthers’ Ending Explained: The Fate of Ruth’s Mother in Netflix’s Thriller

Netflix’s Spanish psychological thriller ‘The Truthers’ debuted globally on July 24, 2026, captivating audiences with the tale of a grieving daughter and her conspiracy-obsessed father. The film follows Berlin-based DJ Ruth as she returns to her hometown following her mother’s death, reuniting with her estranged father, Martín, who has become deeply entrenched in conspiracy theories. Directed by Roger Gual and penned by Carlos Montero and Darío Madrona, the duo behind Netflix’s acclaimed series ‘Elite,’ the film offers a gripping narrative.

Known in Spanish as ‘Los Creyentes,’ the film primarily revolves around the question of whether Martín played a role in his wife’s death. By the end, this question is addressed, but the emotional aftermath for Ruth and her father proves to be far more complex than a straightforward murder revelation.

Ruth had distanced herself from her parents for two years, working as a bartender in Berlin and maintaining minimal contact. Suddenly, her mother Lucia began reaching out through calls, texts, and voice notes, but Ruth ignored them until Martín informed her of Lucia’s tragic death following a fall.

The film suggests that Lucia’s death stemmed from the strain in her marriage rather than any external threat. She had uncovered Martín’s elaborate conspiracy against a pharmaceutical company named Certyx, and her distress over his obsession led her to excessive drinking, resulting in her fatal fall in the bathroom.

This accidental fall becomes the catalyst for Ruth’s suspicions once she returns to her father’s home. Discrepancies surrounding her mother’s last days, along with a peculiar voice note left behind, drive Ruth to suspect Martín’s involvement even before she grasps the complete picture.

The film intentionally keeps viewers aligned with Ruth’s perspective, making Martín’s paranoid behavior appear suspicious rather than merely troubled. Each clue is filtered through Ruth’s increasing distrust, complicating the distinction between her father’s conspiracy theories and a potential cover-up.

Martín’s transformation is pivotal to Ruth’s doubts. Once a member of the Spanish Civil Guard, he has morphed into a grumpy, aggressive man consumed by conspiracy theories after retirement, further alienating him from his daughter. His obsession revolves around Certyx and a missing local boy named Alejandro, whom he believes the company abducted for experimentation. The community’s desperate search for answers following Alejandro’s disappearance drives Martín deeper into eccentric explanations throughout the film.

The family home itself becomes part of the enigma, filled with hidden rooms and surveillance equipment that Ruth discovers. Ultimately, she learns that the cameras were never meant to protect them from any real threat; instead, Martín’s obsession with uncovering hidden truths served as a psychological barrier against more profound pain.

This barrier, as the story unfolds, is rooted in grief. For Martín, pursuing imaginary foes was easier than confronting the reality of illness and loss that took away the woman he loved, and his refusal to process that grief ultimately drives the family apart.

The film’s climax shifts from suspicion to action when Martín becomes convinced that Certyx has targeted Ruth as well. After finding out that Ruth had been exploring his secret attic, he decides she can no longer be trusted, binding her in the house alongside his ally Berta, and leaves to execute the plan he had been preparing for months.

While restrained, Ruth experiences a breakthrough that alters her understanding of Alejandro’s disappearance. A news broadcast featuring Alejandro’s photo triggers a memory of something she cut her leg on while swimming in a nearby lake, leading her to realize it was the boy’s bicycle, indicating he had drowned rather than being abducted by Certyx.

Ruth manages to free herself and rushes to prevent her father from carrying out the bombing, but she arrives too late. By the time Ruth and her friend Aron reach the Certyx building, Martín and Berta have already set the explosion in motion, resulting in the structure collapsing on them and causing their deaths.

In the aftermath, Ruth is left grappling with a truth that brings no solace. She ultimately decides to sell the family home in her hometown, parts ways with Aron, and relocates to Madrid in an effort to escape the painful memories.