At the Villa Rose is a detective novel by British writer A.E.W. Mason featuring his character Inspector Hanaud. In Aix les Bains during the early 20th century, Celia Harland, a beautiful (of course) young English girl down on her luck is befriended by a rich widow, Madame Dauvray, an addict of "e;spiritualism"e;, and stages seances for her benefactrix, while knowing full well that the su...