Desaparecida -

This psychological thriller (often titled Desaparecida in Latin America) features a unique premise where a grieving mother becomes convinced that a stranger's child is actually her own daughter who "died" years ago.

Missing (2023) - IMDb

Because the word is so common in Spanish-language media, it often refers to these distinct works: Desaparecida

In a historical sense, "Desaparecida" refers to the thousands of people forcibly disappeared during Argentina's military dictatorship. An interesting feature of this tragic history is the "Grandmothers of the Plaza de Mayo," who used pioneering mitochondrial DNA testing to find and identify their stolen grandchildren decades later. Desaparecida

Each episode is named after the number of days since the girl's disappearance (e.g., "Day 1", "Day 4", "Day 18"). Desaparecida