Little Necro Red (2019) on Netflix

Angela's daughter, Annie (aka "Little Red"), mysteriously disappeared, but the police never found her body. While the mother begins to shed light on the mystery, a religious cult ruled by a matriarch known as the Grandmother, is leaving a trail of blood and carnage in its wake. The further the mother delve into madness, the deeper the doubt burrows into her mind: is Annie alive? This is the most gory, and twisted Slasher you have ever seen: this is not a fairy-tale.

—Steve Jones