Research and Planning: Stalker Behaviour and the Effects on the Victim

I have been looking for clips that show behaviour of stalkers and found this highlighted in a TV Series called 'One Tree Hill' the video below is one that a fan has made on youtube, I found it interesting as they took parts from episodes of the stalking and then the consequences it had on the victim. This will help me when making the film trailer as it will enable me to direct the actors playing characters exactly how to act in the circumstances of the plot line. I think it will help me to make my trailer look realistic and to give a better portrayal of what it is like being stalked.