Thank you to listener Alexandre Guglielmelli from Brazil for this case suggestion! In 2002, a wealthy couple is found murdered in their home in Sao Paulo, Brazil. Their own daughter soon becomes a suspect and the case becomes a media sensation in Brazil.
Resources:
Murder in Brazil #5 - The von Richthofen Case, www.murderiseverywhere.blogspot.com
Rogerio Pagnan,
UOL, Sao Paulo, "Suzane Richthofen, Sentenced for Murdering her Parents to Marry Female Prisoner," Oct 29, 2014.
The Creepy Case of Suzane von Richthofen: The Evil Blonde. YouTube, uploaded by Brief Case, May 27, 2018,
https://youtu.be/gEyjSBDZuCk.