- HD 1080
- Runtime: 88m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Edoardo Vitaletti
- Stars: Stefanie Scott, Isabelle Fuhrman, Rory Culkin, Judith Roberts, Carolyn McCormick
- keywords: 1800s
- Production_studio: Intrinsic Value Films, Arachnid Films
- Slogan: Every family has secrets.
- providers: AMC Plus Apple TV Channel, AMC+ Amazon Channel, AMC+, Shudder, Shudder Amazon Channel, Shudder Apple TV Channel
- The The Last Thing Mary Saw is featured in the top rankings of 2021
- #100 in Top Horror Movies of 2021
Winter, 1843. A young woman is under investigation following the mysterious death of her family's matriarch. Her recollection of the events sheds new light on the ageless forces behind the tragedy.