A superb relationship book set mostly in Nigeria with some Canadian content. The memorable characters: a mother with an uneasy existence with the spirit world, and her twin daughters. The twins exhibit a special closeness but also a requirement for space away from each other, especially after a childhood trauma to one of the twins. And one of the daughters has an apparition to consult with and offer comment. An interesting feature of the story is that the context is Nigeria of privilege. There is lots of Nigerian cooking too. From the Giller long-list.