Your writer, in conjuring this tale of murder, adultery, incest, ghosts, redemption and remorse, takes you first to a daffodil-filled garden in Highgate, North London, where, just outside the kitchen window, something startling shimmers on the very edges of perception. Fluttering and chattering, these are our kehua - a whole multiplying flock of Maori spirits (all will be explained) goaded into wa...