It sounds like you’re looking for a related to the movie or series “Escándalo: Relato de una obsesión” — specifically English subtitles (or “ingles” / English audio).
The film is a psychological thriller that delves into the dark true story of the Boston Strangler. It focuses on the intense obsession and the subsequent scandal that enveloped the city during the murder spree. Unlike typical slasher films, this "relato" (account) focuses on the psychological toll on the investigators and the media frenzy (the "escándalo") that surrounded the case. It sounds like you’re looking for a related
). Availability in the US/UK may require checking your local Prime Video library It sounds like you’re looking for a related
The Spanish series Escándalo, relato de una obsesión (internationally titled Scandal: Story of an Obsession It sounds like you’re looking for a related