The hidden beach / Karen Swan.

"In the oldest part of Stockholm, Bell Everhurst is working as a nanny for an affluent family. Hanna and Max Von Greyerz are parents to 7 year-old Linus, and 5-year old twins Ellinor and Tilde, and Bell has been with the family for over two years. One early Spring morning, as she's rushing out to take the children to school, she answers the phone - and everything changes. A woman from a clinic she's never heard of asks her to pass on the message that Hanna's husband is awake.Bell is confused. She clearly just saw Max walking out of the house a few minutes earlier, but the woman mentioned Hanna by name... When she gets hold of her employer, the truth is revealed: Hanna's first husband fell into a coma seven years earlier, following a terrible accident. He has been in a Persistent Minimally Conscious State since and there was very little hope of further improvement. But now he's awake. And life is going to change for them all."--Publisher.