Karin Viard's performance is just excellent: she's subtly unhinged, creepily obsessive and in the end plainly scary. Her character's background is barely delineated but we can see everything through her every move and word.
The parents are also good in their own way, but they don't have much script to work with: despite having to deal with an increasingly weird (to be kind) nanny, they seem to be unable to face the problem and act passively in most occasions (especially the mom). This creates an imbalance of tension in the movie and the natural climax doesn't feel as devastating as it should be.
The parents are also good in their own way, but they don't have much script to work with: despite having to deal with an increasingly weird (to be kind) nanny, they seem to be unable to face the problem and act passively in most occasions (especially the mom). This creates an imbalance of tension in the movie and the natural climax doesn't feel as devastating as it should be.