Stalking is an old problem with a new focus as law makers and clinicians have increasingly understood and acknowledged the serious psychological harm that it does to so many victims. Let's take a walk with the stalker and understand what drives them, who they are, how they operate and what psychiatric conditions may be at play. Our dash of pop culture takes a look at a book and film that examines the interplay between enduring love and the stalker. (TW: descriptions of violent crime).