The most significant arrival of all, though, is adolescence. Crummey does a powerfully unsettling job of imagining how the onset of sexual feelings and self-consciousness would affect an isolated brother and sister who have never been prepared for what’s happening to them, and have nothing and nobody to draw on once it does. He also allows some neat touches of allegory to emerge naturally from the narrative without diminishing the singularity of Evered’s and Ada’s experiences. After all, you don’t have to have grown up orphaned in an 18th-century Newfoundland hut for puberty to come as something of a shock. Or to suddenly realise that the world is much bigger and more mysterious than the one you took for granted in childhood.