Die Screaming Marianne (1971)

Plot

Following their parents' split, Marianne resides with their mother in England, while her sister stays with their father in Portugal. The tragic loss of their mother thrusts Marianne into the spotlight as she stands to inherit a substantial fortune and incriminating documents that could expose her father, a corrupt judge. Tensions escalate as her father seeks to recover the documents, while her sister sets her sights on the inheritance. Each sibling is driven by desperation, willing to go to extreme lengths—potentially even murder—to secure their desires, leading to a gripping and treacherous conflict.