Two twin sisters are inseparable, but then one of them gets married and moves to a mansion in the depths of the country. The setting is just before the second world war. The married twin disappears and her sister decides to investigate what happened.Halfway through the book, even before she disappears I had realized who was the culprit, so the book was a failure in that aspect. I was also a little put off that the police are not even informed about a person who killed twice and attempted to kill once. I did not feel sorry for the murderer at all, so I don't see why people who had their dear ones killed felt sorry for the person.Another thing that put me off is Dorabella. If I had been her sister, I would have slapped her senseless. The author seems to wave away her actions by claiming she is impulsive, but only a madwoman would behave that way!I enjoyed the writing and it was interesting the speculate on who will die next. The various settings were fun to read, but overall it was simply too predictable to actually feel any suspense.