Actress Gwyneth Paltrow tried to protect herself and her family from a relentless stalker who traveled across country to get close to her; Gwyneth's personal head of security provides exclusive insight into the private life of the terrified star.

John Hinckley Jr.'s obsession with a Robert Denison movie character gave him the deranged idea that murdering a president was the way to Jodie Foster's heart; renowned Forensic Psychologist Reid Meloy and author Del Quentin Wilber provide insight.

Actor Michael Douglas and his wife Catherine Zeta-Jones came face-to-face with their real life stalker, a crazed fan who took violence to new heights.