Precipice — Tom Savage

The house is named Cliffhanger, a bit of heaven perched high on a hill in a Caribbean paradise. It is the home of the perfect family: Kay, a lovely rich widow; Adam, her handsome second -husband; and Lisa, her teenage daughter. They have all that love can give and money can buy.

Then bright and beautiful Diana arrives, the ideal secretary-au pair. And suddenly everyone in this house is on the edge of a hell where nothing is what it seems. And no one is who they pretend to be....