The debut that sparked a thriller phenomenon: Broke, haunted Millie takes a live-in maid job with the wealthy Winchesters—only to find her attic room locks from the outside, her employer Nina swings between warm and vicious, and Andrew hides a violent side. As Millie uncovers Nina’s abusive past, she’s tangled in a deadly plot, culminating in a shocking climax that will leave you reeling.