Stalkers are one of the strangest phenomena to emerge in the modern age. They plague not only celebrities but also old lovers, work colleagues, mere acquaintances and even complete strangers. Their obsessive behaviour and deluded fantasies cause appalling suffering to their victims.

This disturbing and stylish drama-documentary goes behind enemy lines of this nightmarish world. Mixing dramatisation of six psychiatric case studies and interviews with stalkers, with analysis from the world’s leading authorities on the subject, this film brings to life for the first time the truth about who stalkers really are.