Textual Analysis - 03

In this sequence from Silent Hill, the nurse monsters shown between 0:46 and 02:50, move in a very eerie and unnatural way.

To acheive this, the director employed a group of dancers, used make up on them to make them look like the monsters, he then told them to walk backwards, and reversed it in the final cut.
This is the reason for the frightening way they move.

I would like to employ a similar technique to this when making scenes involving the ghost of Maria, as I believe it will ad to the horror of the film and the specific sequence.