Idea One.

A group of three girls walk out of a restaraunt together, you see them all laughing and joking around. The girls walk arm in arm down a dark road lit by street lights. The camera then moves to a different view. This is of a picture of one of the girls in a pair of mysterious hands. The camera then shows this 'stalkers' point of view, and looks at the girls from behind a bush or a hidden place. There is a some sort of snigger from the stalker, and the girls all turn around in a frightened manner, to find nothing there. The girls are all scared, but think they are hearing things and think nothing of it and carrying walking. The camera then goes back to where the stalker was to show that he is no longer there, but he has dropped the girls picture which now has a large red cross over her face.