Netflix is famous for its addictive, binge-able TV shows. At this point, practically everyone and their mother have seen hits like “Stranger Things” and “The Queen’s Gambit“. But Netflix’s newest hit, “Who Killed Sara” has caught practically everyone by surprised. Not only is “Who Killed Sara?” a Mexican production (aka ¿Quién Mató a Sara?), but its Netflix’s most successful foreign language series ever.