A fitting finale to a marvelously entertaining series full of finely drawn characters often scarred by the horrors of war. Once a maid in Lady Rowan Compton’s household, then a university student, a nurse, and an agent of the British Secret Service, Maisie has blossomed into a psychologist and private investigator. Her first husband, James Compton, died while test-flying an experimental aircraft. The end of World War II finds her living in the Dower House of the Compton estate with her second husband, Mark Scott—an American diplomat—and their adopted daughter, Anna, and comforting her former mother-in-law, Lady Rowan, who’s just lost her own spouse. When she hears there are squatters living in the Comptons’ London house, Maisie heads to Belgravia, where she finds four teenagers in residence along with an ailing Will Beale, the son of Maisie’s business partner, who survived a Japanese prisoner-of-war camp. Checking with her old friend DCI Robbie MacFarlane, whose help she’d asked in finding the previously missing Will, she gets a bad feeling about Robbie’s interest in the squatters. Worried about the youngsters, who were part of some secret government project, Maisie talks them into letting her into the house to help Will. When they admit they witnessed the murder of a Nazi sympathizer that the government wants covered up, she moves the group to a safer place. Her investigation of the murder discloses a mass of nasty secrets. One of the teens found a packet of letters under the floorboards of the Compton house belonging to one of Maisie’s fellow maids, killed in an explosion, who had a child with James when they were very young. Finding that child, who was put up for adoption, may be the most challenging task Maisie’s ever undertaken.