After the sinking of the Lusitania in 1915, New York society writer Louisa Delafield and her assistant Ellen Malloy join in the hunt for German saboteurs who are employing biological and chemical warfare on American soil. The spies have infiltrated all levels of American society, and they'll do anything from churning out propaganda to cold-blooded murder to keep America from helping the allies. In Secrets and Spies, Louisa and Ellen confront their own conflicting loyalties as they are thrust into a world of subterfuge and deception.