( ¿Dónde está Marta? ) is a gripping three-part true crime docuseries on Netflix that re-examines one of Spain’s most high-profile and painful cold cases: the 2009 disappearance of 17-year-old Marta del Castillo . The Premise

On January 24, 2009, Marta del Castillo left her home in Seville to meet friends and never returned. While her ex-boyfriend, Miguel Carcaño, eventually confessed to her murder, the case became a labyrinth of lies. Over the years, the suspects changed their stories dozens of times, leading police on multiple fruitlessly expensive searches for her body—ranging from the Guadalquivir River to various landfills and farmlands. Season 1 Highlights

More than just a crime summary, Where is Marta? is a study of a family’s enduring grief and a critique of a legal system that allowed the truth to be buried under a decade of contradictions. It leaves viewers with the haunting realization that while a killer is behind bars, the primary question——remains unanswered. AI responses may include mistakes. Learn more

The documentary shines a harsh light on the judicial and police errors that allowed the suspects to coordinate their stories, resulting in only Carcaño receiving a significant murder sentence while the others were largely acquitted of cover-up charges.

The emotional core of the series involves Marta’s family and their tireless quest for the truth. It concludes with a significant breakthrough: a judge granting access to analyze the raw data from the suspects' mobile phones using modern technology, hoping to pinpoint their exact locations on the night of the crime. Why It Resonates