Strait-laced Frances Tobin is the 'perfect' middle child, wife and mother. But when an old flame contacts her out of the blue, she's tempted to risk everything.

Her older brother Conor, a high-achieving CEO, enjoys the perks of his media-darling status.

Little does he know the reputation he has spent years building is about to come crashing down.

Ten years ago, youngest sibling Sinead was the next big thing in the literary world. Now she's considering desperate measures to revive her once-promising career.

When they receive the news that their complicated, unknowable mother only has days to live, Frances, Sinead and Conor rush to her side. But as they prepare to say goodbye to Joy, they discover she has one last devastating secret to share, one that will finally help them to understand her - and each other.