Seth Beauman can't sleep. He stays up late, calling strangers from his phone book, hoping to make a connection, while his wife, Maeve, sleeps upstairs. A crossed wire finds a suicidal Hadley Serf on the phone to Seth, thinking she is talking to The Samaritans. But a seemingly harmless late-night hobby turns into something more for Seth and for Hadley, and soon their late-night talks are turning into daytime meet-ups. And then this dysfunctional love story turns into something altogether darker when Seth brings Hadley home.... And someone is watching....