THE SUNDAY TIMES AND NEW YORK TIMES BESTSELLER "Welcome to the family," Nina Winchester says as I shake her elegant, manicured hand. I smile politely, gazing around the marble hallway. Working here is my last chance to start freshI can pretend to be whoever I like. But I''ll soon learn that the Winchesters'' secrets are far more dangerous than my own . . . Every day I clean the Winchesters'' beautiful house top to bottom. I collect their daughter from school. And I cook a delicious meal for the whole family before heading up to eat alone in my tiny room on the top floor. I try to ignore how Nina makes a mess just to watch me clean it upHow she tells strange lies about her own daughter. And how her husband Andrew seems more broken every day. But as I look into Andrew''s handsome brown eyes, so full of pain, it''s hard not to imagine what it would be like to live Nina''s life. The walk-in closet, the fancy car, the perfect husband. I only try on one of Nina''s pristine white dresse