As the fact checker for a popular magazine, Gabby DiMarco believes in absolute, verifiable Truths—until they throw the facts of her own life into question. The genealogy test she took as research for an article has yielded a baffling result: Gabby has a sister—one who’s been desperately trying to find her. Except, as Gabby’s beloved parents would confirm if they were still alive, that’s impossible.

When Esmé Foster left the Boston suburbs to become a professional ballerina, the future shimmered with promise. Eleven years later, her career has been derailed by an injury, and Esmé knows it’s time to come back to Graybridge to help her brother care for their ailing father. But her return coincides with an unthinkable crime. Kara Cunningham, one of Esmé’s high school friends, is found dead in the woods behind the Fosters’ house. Esmé is shocked and grieving, but also uneasy.

Harvard librarian Hester Thursby knows that even in the digital age, people still need help finding things. Using her research skills, Hester runs a side business tracking down the lost. Her new case is finding the handsome and charismatic Sam Blaine. And Sam has no desire to be found. 

Every year, the illustrious Van Ness siblings, heirs to a copper fortune, gather at their secluded winery estate for a joint birthday celebration. It's a tradition they've followed nearly all their lives, and now they are back with their significant others for a much-needed weekend of rest and relaxation, away from the public spotlight.

Constance Sparks always says yes…when her capricious best friend needs money; when her boss gives her more responsibility without a raise; and when her boyfriend, Hayden, who is very kind but also secretive, asks her to marry him. While planning their wedding—and struggling with anxiety about the right course for her future—Constance researches the history of her antique engagement ring and unearths the name of a man who might be connected to it, plus his tragic love story.