The video appears to be a mundane home movie of three sisters at a park, but upon closer inspection (and audio enhancement), the investigator hears a coded message being whispered by the youngest sister.
It plays on the "Ring" or "creepypasta" style of digital horror that feels personal and immediate. Erin Star - Sister 3.mp4
It taps into nostalgia and the "dark side of fame" tropes found in real-life music industry stories. 3. The Mystery/Noir Concept: "The Erin Star Metadata" The video appears to be a mundane home