10 Best Sibling Rivalries In Horror Movie History
2. Mercy And Jonas Vs Thomasin - The Witch
As if being stuck out on a remote farm with your unforgiving Puritan family wasn't hard enough, poor Thomasin (Anya Taylor-Joy) also has to contend with her awful twin siblings Mercy and Jonas.
With her mother blaming her for the loss of infant Samuel (kidnapped by the local witch... sorry, VVitch), and her father a bumbling hypocrite, no-one really cares that the twins are so relentlessly horrible to Thomasin. And, when they accuse their big sister of witchcraft, the rest of the family are inclined to believe them.
In a film full of unsettling performances and character work, Mercy and Jonas are among The Witch's creepiest touches. No Satan required; they're a spiteful, snotty pair, and their treatment of poor Thomasin only makes her turn to the devil more plausible. With the twins being so relentlessly nasty to her, it's no wonder that Thomasin eventually succumbs to the Satanic call of Black Phillip.
Mercy and Jonas eventually get theirs too, abducted in the night, presumably sacrificed to Satan and turned into Witch ointment, just like baby Samuel. Don't mess with big sister.