Paris, 1945. Frederick Rowlands arrives in a city riven by the political turmoil following the Liberation at the behest of MI5 agent, Iris Barnes. A young woman calling herself Clara Metzner has just been released from Ravensbrück concentration camp - and Rowlands, who last met her in Berlin in 1933, has been given the task of confirming whether she is who she says she is. This is far from easy, not only because of Rowlands' blindness, but because Clara's experiences have changed her almost out of recognition. But her evidence may be vital in assisting Iris to track down suspected collaborators in the upper echelons of French society. Then Clara - or the girl who is claiming to be her - is found dead, in circumstances that point to murder. Thrown into the unfamiliar world of Parisian high society, Rowlands must track down the killer, and prevent further deaths - including his own.