I like mysteries, but this book far transcends that category. It is really a study of the ideology of the kibbutz -- the communal, socialist philosophy that the founders of this movement held. They were highly idealistic and sacrificed a lot to make it work. But the idea has proven faulty all over the world, including on the kibbutzim. Nowadays, the kibbutzim rely on a variety of capitalist businesses to stay alive. In this book, the founders can't let go of the idea even though most people there, especially younger people, don't want it. The brutality hidden behind their attachment to the ideal reminds me -- in microcosm, on a far lower level here -- of the brutality that has appeared in all socialist countries as the ideals have failed in practice.
In addition to all this, it is a very good read.