Great reading as always in the books from Ngaio Marsh.

Roderick Alleyn is personally involved in this case and long without his usual business attributes. On a sort of island, he and the suspects are cut off the main land.
The plot is complex, as we are used from Marsh, the story itself agreeable and pleasant to read. The characters almost all have some issues which make them suspects but not enough to make them repulsive to the reader.
The cover summarizes the situation nicely. A green figurine, an umbrella, a necllace and a rock with blood on it. Of course there is some romance in the air.
An old maid is both victim but also suspect as instigator of her own death.
Psychologically thoroughly thought out, miss Marsh presents us with a whodunit mystery where Alleyn spends most of his time talking to people to come up with a perfect timeline so he can pinpoint the murderer and expose his alibi as false.