The Housemaid's Secret by Freida McFadden

It's hard to find an employer who doesn't ask too many questions about my past. So I thank my lucky stars that the Garricks miraculously give me a job, cleaning their stunning penthouse with views across the city and preparing fancy meals in their shiny kitchen.

I can work here for a while, stay quiet until I get what I want. It's almost perfect. But I still haven't met Mrs Garrick, or seen inside the guest bedroom.

I'm sure I hear her crying. I notice spots of blood around the neck of her white nightgowns when I'm doing laundry. And one day I can't help but knock on the door.

When it gently swings open, what I see inside changes everything....