Someone is always watching James Fitzpatrick is a high-profile partner in one of London's most successful law firms. He's married to Bella. She's beautiful and clever, a teacher at one of London's most prestigious schools. They have the perfect lives. But then, one night, a career-ending error sees James contact the IT helpdesk in desperation. A woman called Charlotte answers his call, setting in motion a series of events that would shatter James' and Bella's lives. But who is the woman at the other side of the computer screen? And why is she out for revenge?