42 Days of Darkness (Spanish: 42 días en la oscuridad, lit. '42 Days in the Dark') is a six-part Chilean crime thriller television series that premiered on Netflix on May 11, 2022. Directed by Gaspar Antillo and Claudia Huaiquimilla, the series is partially based on the true story of the disappearance of Viviana Haeger in 2010, which is depicted by Aline Küppenheim, and on the search for answers undertaken by her sister Cecilia, played by Claudia Di Girolamo.