A brief fling between a male disc jockey and an obsessed female fan takes a frightening, and perhaps even deadly turn when another woman enters the picture.
For Dan Gallagher, life is good. He is on the rise at his New York law firm, is happily married to his wife, Beth, and has a loving daughter. But, after a casual fling with a sultry book editor named Alex, everything changes. Jilted by Dan, Alex becomes unstable, her behavior escalating from aggressive pursuit to obsessive stalking. Dan realizes that his main problem is not hiding his affair, but rather saving himself and his family.
After David Kim's 16-year-old daughter goes missing, a local investigation is opened and a detective is assigned to the case. But 37 hours later and without a single lead, David decides to search the one place no one has looked yet, where all secrets are kept today: his daughter's laptop.
Bill, an idle, unemployed aspiring writer, walks the crowded streets of London following randomly chosen strangers, a seemingly innocent entertainment that becomes dangerous when he crosses paths with a mysterious character.
After stalking and saving the life of her favorite fiction author in a car accident, his manic obsessor holds him captive in her remote Colorado home then forces him to write back to life the popular literary character he killed off.