Best to leave the ghosts alone. Boston, 1793-Federal spies Molly and Josiah Robb have returned to Molly's childhood home-not to brood on her father's suicide, but with a mission: woo Boston's elite and find the traitors infiltrating American intelligence operations. Dinners, parties, church committees, business dealings-the Robbs must throw wide their doors if they are to hear society's tittle-tattle. Only one door remains locked. No one goes in Papa's study. Spinster Anne Lawrence will do anything to placate her wealthy uncle if it means her brother Peter will inherit his fortune. So when Uncle Lawrence asks her to befriend the detestable Molly Robb and hunt down a document hidden in Molly's house, Anne agrees. Little does she know that she's being watched in turn. When Molly tells Josiah that they're expecting a baby, Josiah is caught between joy and panic-Molly's late mother lost several children at birth. When Molly's pregnancy doesn't go as planned, he wonders if they are reliving her parents' story. In this poignant conclusion to the Molly Chase series, Keeper of Keys explores the joys and sorrows of marriage, the weight of sin, the power of mercy, and the true meaning of homecoming.