After three years of emotional abuse, 28-year-old Peggy Klinke breaks it off with boyfriend Patrick Kennedy. When Patrick begins watching Peggy's every move, police offer little-to-no help, leaving Peggy to take matters into her own hands.

When Mary moves to a quiet DC suburb, she finds a new best friend in her next-door neighbor Jane. Before long it's clear that there's something strange about Jane. Uncomfortable, Mary tries to distance herself, but Jane won't be stopped.

When single mother of two Harvette Williams gives her business card to Kevin Gary, she has no idea that she's inviting an obsessive stalker into her life. Dr. Michelle Ward looks at what happens when a harmless crush turns into a dangerous obsession.

Police officer Amy Johnson is happily married to Dustin Hall for four years when in the blink of an eye, he becomes a different man. As a cop, Amy is convinced she can handle it on her own until Dustin finally goes too far.

Single mother Karen Welch gets a mysterious call on Christmas Eve. At first, she thinks nothing of it, but before long, she's getting dozens of hang-up calls every day. Dr. Michelle Ward examines this shocking game of cat and mouse.

In 1996, outgoing Cameron Wallace meets shy Ryan Clutter in a high school art class. The two are only acquaintances, but Ryan soon becomes obsessed with Cameron. Little does she know that Ryan will stalk her … for the next ten years.