Reeling from the death of their mother in 1986, teenagers Annie and Jessica Andrews perform a seance to see if they can contact her spirit. Soon after, strange things start happening in their house in Pepperell, MA.

Westfield, NJ - an affluent suburb just outside the bustle of New York City, is home to picture-perfect homes and families alike. In the grand home of John List and his family, a true monster hides behind the stately facade.

Reggie and Carol Sumner live in Jacksonville, FL, where the 61-year-old retirees have recently settled into a more relaxed lifestyle. But when they mysteriously go missing after a visit from a former neighbor, investigators have to wonder if they left on their own.

When Denise Sam-Cali and her husband, John Cali, discover that someone has broken into their Allentown, PA home in 1993; they think they know who did it. One week after the break-in, Denise comes face to face with the intruder -- and she has no idea who he is.

When a masked robber is interrupted by both the daughter of the house, Sarah Harris, and her father, Ivon, the intruder goes to horrible lengths to cover up his crimes.

When Chanin Starbuck comes home to find her house has been vandalized, she fears her ventures in online dating are to blame.

After Lois Pearson turns down a date with her neighbor Jeffrey Maxwell, she thinks that's the last she'll see of him on her rural Texas land. Six years later, he's back, and it's clear he's still holding a grudge.

A flight attendant who never travels alone offers to break her own rule once for a quick trip to Detroit, but she finds more than she bargained for in her hotel room.

A woman and her daughter are kidnapped and held hostage by a man exacting revenge from his high school days.

After a encounter with a peeping tom outside his daughter's bedroom window and another with a masked man in his own hallway, Jerry Glaser thinks someone is trying to kill him, so he takes his life into his own hands to protect himself and his family.

It's Mother's Day, and first-time mom Tennyson Jacobson is looking forward to celebrating with her family, but when she spends the afternoon fighting off a violent intruder, she can't shake the feeling he'll soon be back to strike again.

The Millers have long suspected something's off with their oldest son Steven, but as he slips from strange into sinister, there's no telling how far Steven will go to get his respected New York family's attention.

College sophomore Gina Tenney is thrilled to be living all on her own, that is until she discovers she has a stalker. When she and her tormentor finally come face-to-face, it brings an even bigger surprise: this secret admirer is no stranger.

For 17-year-old Sarah Wisnosky, college is all about new experiences. When she catches the eye of a flirty frat boy, she's happy to play along, but soon she discovers he's hiding a dark secret. Sarah will need to break things off before it's too late.

Leaving a violent ex-husband and getting a problem co-worker fired, 21-year-old Cathy Whitehead is happy to build a life with the man of her dreams. When a stranger shows up on her doorstep one night, she's soon caught up in the web of a familiar foe.

Gary Taylor knows what people say about Catherine Mehaffey. Still, when he finally meets the sexy lawyer, he just can't stay away, but it's only a matter of time before Gary realizes he's made a grave mistake and that breaking things off won't come easy.

Small-town gal Frankie Cochran thinks she's found the one in handsome David Gerard, but as his behavior brings rising cause for concern, Frankie wonders if a secret from his past might hold more meaning than she first thought.

With a new home and loving fiance, single mom Lisa Filiaggi finally feels like luck is on her side. That is until troubles from her past come back to haunt her and threaten to destroy all her future plans.

While out for a run in the Montana wilderness, 22-year-old college student Kari Swenson is taken prisoner by two mountain men. When she learns of their twisted plans for her, she'll do everything she can to escape or die trying.

Sandi Musk thinks dating Andy LeFleur is a welcomed distraction from her ongoing divorce, but when it becomes clear he wants more than she's ready to give, she tries to call things off. Thing is, this is one guy who won't take "no" for an answer.

After college graduate Anita Wooldridge goes missing from her parents' home, investigators must rely on quick thinking and cunning police work, as they race against the clock to find her before it's too late.

After 30-year-old single mom Kaye Robinson turns a suspicious late-night stranger away from her door, she has no idea the threat to her family is far from over. But with her young son home, she'll do everything she can to keep him safe.

19-year-old Micah Rine is striking out on her own when she falls for fellow college student Thomas Pate. But when their love takes her far away from family and friends, Micah begins to wonder who she can really trust.

Karen Widdoss thinks she's finally rid of her possessive ex-boyfriend Leonard. But months into dating a new man, she can't shake the feeling she's being watched. When a stalker does step out of hiding, he doesn't look at all like she imagined.

After a failed relationship, 22-year-old Jennifer Hitchcock thinks she may have found that special someone when she meets Maurice Mason. But as soon as he moves in, she can't help but feel that someone is watching her every move.