David Marks, the son of a powerful and wealthy real estate magnate, marries Katie McCarthy, a beautiful working-class woman. Despite an initially blissful marriage and a move to rural Vermont to escape his family's shadow, David becomes increasingly erratic and controlling. Pressured by his domineering father, David is coerced into returning to the city to work in the family business, which puts a strain on his marriage. As Katie pursues her own career aspirations and becomes more independent, David's behavior grows more disturbing and unpredictable.

The couple's relationship continues to deteriorate as Katie discovers unsettling truths about David's family and his past. Tensions escalate, leading to a series of alarming events that put both of their lives in jeopardy. Amid mounting suspicions and mysterious occurrences, Katie's attempts to hold onto her semblance of a normal life are continuously thwarted by David's dark and secretive nature. The story captures the unraveling of their lives and hints at sinister secrets yet to be fully uncovered.