The Younger Wife

Stephen Aston is still married to his wife, who lives in a care home with end-stage Alzheimer's, when he tells his daughters that he plans to divorce her and marry Heather Wisher, a woman half his age. Tully takes one look at Heather and is certain she will wreck their lives. With their mother unable to speak for herself, Tully and Rachel set out to discover what Heather really wants, while Heather carries secrets of her own.

Sally Hepworth builds the suspense from ordinary family life, from loyalty, grief and resentment, rather than from monsters. As the publisher's blurb puts it, everyone in the story is hiding something, and the secrets pile up quickly. This is a sharp, secret-laden domestic thriller for readers who like their tension close to home.