The Nightcomers plot
"Two Children. Two Adults. One Unspeakable Crime."
After their parents' fatal accident, Flora and Miles are left in the care of a charming young governess, an elderly housekeeper and an unmarried house servant. The latter hides behind a cheerful, endearing face, a devilish brain that is only after one thing: pleasure. Unnoticed, he influences the entire household. He seduces the governess, who falls for his apparently innocent charms, and he makes the children part of strange games. Slowly he gets all under his power. This irrevocably leads to a situation in which there is no turning back.