The Stalker Files

In 1995, singer Madonna attracts the attention of a dangerous man who comes knocking on her door.

Sportscaster Erin Andrews became the target in a twisted game to expose her most private intimate moments; Michael Barrett went from an average family man to a perverse stalker who tracked Andrews in hotels across the country.

The story of a woman gripped y the fantasy that she was romantically involved with David Letterman; a glimpse into the mind of a delusional woman suffering from the devastating condition of schizophrenia, and the story of her tragic demise.

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.

Hollywood director Steven Spielberg became the target of violent, drug-induced stalker Jonathan Norman who stalked Spielberg's house with handcuffs and a rape-kit; courtroom illustrator Mona Shafer Edwards discusses the courtroom drama.

An in-depth look at John Rinaldi and Mark Bailey who have spent more than 45 years dedicating their lives to hunting down actress Brooke Shields.

On July 18, 1989, Rebecca Schaeffer is killed by an obsessed fan who had been stalking her for years; an in-depth look at the life of actress Rebecca Schaeffer.

Artist on the rise Christina Grimmie makes a name for herself on "The Voice" and YouTube, but has no idea that a man toils away in silence, contemplating a deadly strike.