With three knocks, Ruby is cast into a living hell… It had seemed like the perfect job. For months, she could stay in a cabin in the middle of the Yukon wilderness with only a pack of sledge dogs to care for. But from the moment she arrives in the isolated dog yard, something is terribly wrong. She can feel it watching her from the woods. She can hear them whispering to her in the silence. But she is sure it is just a trick of her mind. Until the night they arrive. Three children appear on her doorstep in the middle of the night; each one with pitch black eyes. They plead with her to let them inside, but her rejection draws her into a war of wills against the demonic forces. Isolated in a terrain she doesn’t understand, and trapped by an oncoming blizzard, Ruby will have to decide how far she’s willing to go to survive. She’ll soon learn that it’s hard to keep the devil out when you’ve already opened the door.

She thought she had escaped. She couldn’t have been more wrong. Months have passed since Ruby managed to flee from the demonic children that hunted her in the Yukon wilderness. Still, she can’t shake the memory of their obsidian eyes and the crippling fear that they aren’t really dead. With distance, time, and her new job at a ski resort, she hopes to bury the past and move on. Her days are simple. She works the gondola to send visitors up the ragged mountainside to the restaurant at the summit, and never stays out past dusk. Then a group of skiers mysteriously disappear, and Ruby is forced to break her own rules. Along with her coworker, Tristan, she must wait for the rescue crew. As night descends, stranded on the top of the mountain, a living mist rises, and her greatest fear comes true. Exhaustion, terror, and madness take their toll, and Ruby and Tristan are forced to rely on each other, or perish. But trust may prove to be just as deadly as what is lurking beyond the door. Because the children have survived. And they really want to come in.

Ruby is on the run, but the black eyed children haven’t forgotten her… Battered and wheelchair bound, Ruby has now found refuge in a dingy apartment building. Her brain is wracked by nightmares and an all-consuming sense of paranoia. The days are marked by a simple routine of eating, taking pain medication, finishing rudimentary tasks at her day job, and most importantly, to not let them in. Yet the demonic children with their pool-black eyes have not forgotten her. They are determined to break down every ounce of sanity until nothing remains. The evil children want Ruby. And they won’t rest until they finally possess her. Thunderous storms beat relentlessly against the building’s windows, and a newly gruesome monster suddenly appears. Its wide, grinning teeth and bloody smile haunt Ruby’s every waking hour … or is this new abomination a figment of her increasingly fragile imagination? With their eerily child-like voices calling out to her, and the grisly creature playing mind-games, Ruby must find a way to banish these horrific fiends once and for all. At her wits end, and physically broken, she will have to keep the children out of her house, and out of her head. But they are terribly relentless. And all they really want is to come in…