Library Journal: Award-winning Kowal (“The Glamourist” series) has a good feel for the era, creating a premise and setting that make this a refreshing historical fantasy. American Ginger Stuyvesant is able to channel the spirits of the dead. Her skills, along with those of other psychics, are being put to use by a special branch of the British Army known as the Spirit Corps during World War I. Working out of a base in Le Havre, Ginger leads one of several circles whose members take intelligence from deceased soldiers who report what they saw on the battlefields. One day a fighter checks in who has been killed by a British officer, not a German enemy. Ginger has a hard time getting her male superior officers to take her seriously, but she is tenacious as she pulls on the threads of a mystery that threatens the whole of the Spirit Corps.