"From the New York Times bestselling author of the Maggie Hope series comes a tantalizing standalone novel about a mother and daughter who stumble upon an underground Nazi cell in Los Angeles during the early days of World War II-and find the courage to go undercover. June 1940. France has fallen to the Nazis, Britain is next-but to many Americans, the war is still something happening "over there." Veronica Grace has just graduated from college; she...