Hell-bent on exacting revenge and proving he was framed for his sister's murder, Álex sets out to unearth much more than the crime's real culprit. Who Killed Sara? (TV Series 2021–2022) - Cast and crew credits, including actors, actresses, directors, writers and more. Who Killed Sara? (Spanish: ¿Quién mató aSara?) is a Mexican crime-drama soap series created by José Ignacio Valenzuela. The first season was released on March 24, 2021. The series follows Alejandro Guzmán returns after 18 years in prison to the life of the Lazcano family, revealing their darkest secrets and seeking to avenge the murder of his sister. On March 29, 2021, Netflix announced ...