"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.