Ice fog descends upon Dickens, Alberta, growing thicker and thicker until Heidi Crawford can no longer see the coniferous forest and snow-capped mountains outside the windows of her Jeep. A huge four-legged shape moves in the mist. She slams on the brakes and squeezes her eyes shut. When Heidi opens her eyes, the fog is gone, but so is her life as she knows it. Instead of forest and snow, she's on a single street in a tiny town, trapped in...