An arranged marriage: Mavis Fischer is intelligent and solitary, and when her boyfriend invites her to dinner and announces his plans to marry someone else, admittedly a bit naïve.

Grady Webster is an independently wealthy marketer, and host of a seasonal duck hunting club. He approaches his decision to marry the same way he does business. After doing research, weighing pros and cons, he writes to Mavis upon a hunting guide’s recommendation, her stepbrother. Therein, Grady proposes marriage.

Mavis drives to rural North Dakota on her wedding day. When she arrives at the country church through the wrong door, Grady is charmed by her beauty and quick wit.

Hunting season commences.

Mavis steps into her role as hostess with a natural ability and ease, winning over those she meets. Delighted by her competence, Grady is convinced he’s made a good investment.

But Mavis has a secret she hasn’t told anyone. When she begins receiving odd texts and messages, Grady sees a side of Mavis that isn’t quite so endearing. Soon, biting her nails and obsessively searching for missing items turns into locking the doors, many nights of insomnia, and paranoia.

After a shocking incident, Grady’s world comes to a halt. He begins to question both Mavis’s sanity, and his own decision to marry her. Mavis, on the other hand, has no recollection of the event.

Then Grady returns home from a work conference and discovers Mavis missing. When he finds her walking down a secluded gravel road, Grady worries the real intruder is a figment of her imagination. He no longer sees her as a good business decision, but as the woman he loves.

And he has no idea how to protect her.