The Son (French: Le Fils) is a 2002 mystery film directed by Jean-Pierre and Luc Dardenne.

Olivier, tormented by the loss of his son and his separation from his wife, develops a slight obsession with Francis.

He stalks him home, steals his keys, and explores his apartment, whilst slowly discovering more about the boy.

With this on his mind, Olivier is ultimately torn between hatred for the murderer of his son and the moral ambiguity of accepting this child from a broken home and disillusioned past.

Luc Dardenne wrote a comment about The Son in his book Au dos de nos images.