The house's owner was not among the dead and the search for the owner takes Hazeldean across the channel to Boulogne. Kendall finally joins him but a bit late in the book, which is unfortunate as Hazeldean is a bit of an annoying character. For a start he becomes quite obsessed with the portrait of a child on the wall of house so that he must find the woman (she luckily) is now. Quite odd, something that hasn't aged well.
The story is fine and worth persevering with, to find out just what actually happened to those seven unfortunates, and it is novel. It just could have been a bit better. It is certainly is an unusual crime story if not a brilliant one.