A gripping psychological thriller by Freida McFadden and the sequel to The Housemaid. The story follows Millie as she takes on a new housekeeping job in a luxurious penthouse. Her employers seem perfect at first, but strange occurrences and hidden secrets soon make her question everything. As Millie becomes entangled in a web of deception, danger, and manipulation, she must uncover the truth before it's too late.