When moving to a new town, Heidi and her kids discover a Christmas mystery with the help of the local handyman.

Erica vanishes, believed a victim of a serial killer, but emerges at her murder trial 3 years later, having run away to live secretly with her older boyfriend near her mother's home, banned from seeing him.

Liz and Malcolm escape for a romantic anniversary weekend at a secluded cabin. When Malcolm suddenly returns to the city, Liz finds herself isolated and in the presence of an unspeakable evil that reveals the cabin's horrifying secrets.