This is a dark, sinister second feature from the director of the 1995 film The Rock of Acapulco, featuring Charles Berling and Karin Viard as a married couple in Paris enjoying the fruits of their careers. He works in an executive post and she works out of a spacious Paris apartment she has inherited from her parents. Their son Julien (Alexandre Bongibault) and daughter Aude (Camille Vatel) are mostly in the care of babysitter Daphnee (Ludvine Sagnier). One day, an unkempt older couple (Manuela Gourary and Pierre Julien) ring their doorbell and introduce themselves as "the Worms," a sibling pair that evidently lived in the building years before. Marianne welcomes them in to look around. Their behavior seems courteous at first, but upon their departure, the family is affected. The house begins to do things on its own, Marianne's depression comes back to haunt her, and Daphnee's sweet demeanor turns sour without warning. A moody thriller from France, this is the first production of Bee Movies, a genre-based company known for such fare.
~ Jason Clark, All Movie Guide