Photographer Isla Wilson is thrilled she's landed her dream job, but the clients who hired her are getting stranger by the day. It sounded so perfect - a month's assignment at the lush Scottish Highlands property of architect Alban McGregor, and his wife, Jessica. But in the woods, there's a playhouse with a chilling history. Two years ago, the McGregors' daughter Elodie was abducted and then died in that playhouse. The townspeople insist her abductor had to be a stranger in their town. Alban refuses to knock the playhouse down, even keeping a picture of it on his wall. Sensing that the McGregors and townspeople are keeping terrible secrets, Isla plans to discover the truth. But the closer Isla comes to uncovering answers, the more the danger mounts. And with a dense cover of snow now blanketing the town, all chance of escape might already be gone.