Detective Mattsen is haunted by memories of a cold case - the murder of her adoptive family ten years ago. Feeling nostalgic and melancholic after Christmas, she travels to Ashton Township in New York to investigate. As she delves deeper into the case, new information emerges, and long-buried secrets come to light. But when events from the past start to put her in danger, Mattsen must decide whether to confront an enemy determined to win at all costs or let sleeping dogs lie.