From the New York Times bestselling author of the Maggie Hope series comes a tantalizing standalone novel inspired by a real-life mother-daughter duo 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. "Stirring . . . Susan Elia MacNeal's page-turning prose is as entertaining as ever--I was riveted from beginning to end."--Kate Quinn, author of The...