Exploring the phenomenon of obsessive stalking of celebrities, focusing on the medical and sociological causes of stalking and the stories of the overly zealous predators who have made victims of their idols. Madonna, Jodie Foster, John Lennon, Steven Spielberg, Gianni Versace, Alec Baldwin, Bjork, David Letterman, Christine Grimmie and Sandra Bullock all had a stalker and this is the true story about each one.