After the death of her grandparents, Lily Button is left without home or family in the quiet corner of Cornwall where she grew up. When she’s offered some cleaning work for local celebrity couple the Summers she is thrilled when the glamorous pair take her under their wing.

With her stunning house and dazzling husband Harry, Sarah Summers appears to have the perfect life. So why, on holiday in Barcelona, does she slip away from her sleeping husband and throw herself into the sea?

After Sarah’s death, Lily finds herself inextricably drawn to the grieving Harry. But as she falls deeper under his spell, she realises that nothing is really as it seems…