What would you do if your home assistant turned evil?'Terrifyingly believable and utterly gripping.' Lisa Jewell'The Assistant is the definition of suspense!' Jeffery DeaverShe's in your house. She controls your life. Now she's going to destroy it.From the No. 1 Sunday Times bestsellerShe watches you constantly.Newly divorced Jo is delighted to move into her best friend's spare room almost rent-fr...