Edward S. Curtis’s 1914 photograph, ‘Dancing to Restore an Eclipsed Moon’, shows the Kwakiutl tribe of North American Indians circling a fire ‘to make a sky creature sneeze and disgorge the moon’. Raised arms are silhouetted against the sky, faces remain imperceptible, and bodies are shrouded in smoke. It is apt that such a mesmerising image should accompany the opening chapter of Nina Edwards’s beguiling book, which gallantly aims to subvert common views of darkness, both physical and metaphorical.