The Skeleton Key/Fridge

Fridge Horror

 * In The Skeleton Key, the villains are two servants who were lynched for performing "hoodoo" on the house's children, but who secretly survived by swapping their souls with another body. The couple's initial victims were implied to be the children... meaning that two very confused and frightened children were lynched by an angry mob led by their own parents.
 * Two confused, frightened, and paralyzed children.
 * The plight of Ben is a lot more grim when you realize the twist ending.
 * Heck, the entire movie is Fridge Horror, if you think about it. Pretty much every single thing Luke and Violet say to Caroline