"From the New York Times bestselling author of the Hello Sunshine Book Club pick The Other Woman, comes a compelling new domestic suspense novel about a family who is forever changed when a stranger arrives at their door. THE TRUTH Sisters Kate and Lauren meet for Sunday lunch every week without fail, especially after the loss of their father. THE LIE But a knock at the door is about to change everything. A young woman by the name of Jess holds a note with the results of a DNA test, claiming to be their half sister. THE UNTHINKABLE As the fallout starts, it's clear that they are all hiding secrets, and perhaps this family isn't as perfect as it appears"-- Provided by publisher.