Continuing from The Mystery of the Yellow Room, The Perfume of the Lady in Black follows the main protagonists to the aborted honeymoon of the couple in the first book — and to a most beautiful castle on a Mediterranean island not far from the French-Italian border. The gorgeous setting is only a foil for the darkest intrigue, amusingly ornamented by a crazy uncle who hunts prehistoric remains, just one more reminder of the vintage setting.
The story unfolds much like the previous book, with a locked room mystery, an evil character, and much intellectual reasoning about who is pretending to be someone else. The narrative relies heavily on the map of the castle, but the Kindle edition I was reading contains no such map, so it was quite confusing! And also a bit passe in the style of the detective inquiry, even if the plot is very twisted indeed.