The House Sitter: An unputdownable psychological thriller with a heart-pounding twist

She's in your home. But can you trust her?

Newly pregnant and down on her luck, Lydia thinks her fortunes have changed when a customer at the café where she works offers her a job and a room in her plush Pacific Heights home.

It's been years since Iris's husband Dean died in his sleep and Lydia soon becomes the daughter Iris never had-making her cups of tea, helping her with the bills, and taking charge of Iris's daily medications now that her memory has begun to fail.

Then one night, someo...