To finally secure justice and protect the ones they love, two former female spies, American Josie Anderson and Parisian Arlette LaRue, aka the Golden Doves, risk everything to hunt down an infamous Nazi doctor in the aftermath of World War II.

Sent to Vienna to authenticate a painting, art restorer and occasional spy Gabriel Allon sets out to uncover the truth about a photograph of an unnamed man who had brutalized his mother during the final days of World War II.