The Family Upstairs by Lisa Jewell

The Family Upstairs is a gripping psychological thriller that weaves together multiple timelines and perspectives. The story begins when Libby Jones inherits a London mansion on her 25th birthday — and discovers she has a dark, mysterious past connected to it.

As she digs into her origins, the chilling history of the house unfolds: a wealthy family, strange houseguests, and the events that led to three adults being found dead while four children vanished.

Tense, twisty, and full of secrets, the novel explores cult-like control, family dysfunction, and the haunting pull of the past.