The Pink Shop by Fergus Hume — Read

Naturally Mr. and Mrs. Shawe did not care about interrupting their honeymoon by a visit to town, especially on an errand connected with criminal matters. But the necessity of taking such a journey was very great, seeing that Perry Toat assured them how the arranged interview with Madame Coralie and her husband would probably clear up matters in a surprising way. Apparently the detective knew much more than she was prepared to admit, for once or twice she looked at the young couple in an odd way. Ralph saw her stealthy glances, but did not ask her in the presence of his wife what they meant. Warned by experience, he hesitated to be too abrupt in his questioning. He did not know what astonishing fact might be told.

But the young man did express surprise when he examined the photograph of Madame Coralie. It was the woman herself without doubt, for her face, although looking much younger, was too strongly marked to be mistaken. She was dressed as a nurse, and looked quite pretty, as her figure was more shapely and the garb became her. Of course, the birthmark was not revealed by the photographic process, or if it had been -- Ralph was not sufficiently an expert to know -- was eliminated carefully, so that the subject of the portrait might appear at her best.