Peggy and Penny are inseparable, growing up together on a Hebridean island; even Penny's roller skates are shared turn-and-turn alike. Their lives are an admixture of the wholly realistic, the highly imaginative, and the whimsical, as children's lives are. It is a world on the cusp of change, but the glimmerings of social media and mobile phones have not yet broken out into the glamour they will come to possess: that admixture of truths and falsehoods that all glamour carries. This world, too, carries other worlds within it. Most notably that of fairy. Fairy is woven into the fabric of shared stories and geographies - its knolls are there for all to see and respect, wondering what lies beneath. It is this wondering that will set Peggy and Penny apart, for one day, when Penny is away, Peggy will skate her way into a knoll and behold the fairy. The fairies are not what was expected - not small winged creatures fluttering in enchantment - but solid folk at work, often undertak...