Heathcliff saves Hareton from Hindley's drunken mistake.
In Wuthering Heights, Hindley, in a fit of drunken carelessness and rage, nearly causes his son, Hareton, to fall to his death.
Hindley dangles the child over the staircase railing in a reckless and dangerous manner. When he loses his grip, Hareton plummets.
However, Heathcliff, who happens to be nearby, catches the child just in time, preventing the tragedy.