City of ghosts
(Book)

"PI Miranda Corbie will do anything to save her mother, but first she must clear her name of the murder of a Nazi spy. June 1940: Hitler's army has conquered France and is turning on England. While the United States is only now waking up to the war, it has been gnawing at Miranda Corbie for years -- ever since she was a nurse in Spanish Civil War. Working in San Francisco as a PI years later, the war should seem a world away, but it might as well be on her doorstep now that she's learned that her mother -- whom she hasn't seen in years -- is trapped in England. There isn't much she can do until the State Department asks her to keep an eye on a chemistry professor who they suspect is a Nazi spy trafficking in information on allied forces armaments. The five grand fee that the state department is offering for the job is tempting, but what seals the deal is the chance to bring her mother home. But that slim chance gets even slimmer when the professor turns up dead and Miranda tops the lists of suspects. Forced to go underground to find the killer and clear her name, Miranda Corbie soldiers on alone but determined in City of Ghosts, the most thrilling novel of Kelli Stanley's award-winning series"--