It is the first novel in the Mither Mages trilogy. It is the second novel in the Mither Mages trilogy. She carried out an excavation on the Mither Tap of Bennachie. In Shetland fishermen petition Sea Mither to afford them protection from the Devil. Mither Tap has an Iron Age fort on its summit. Mither Tap has an astronomical alignment with Caskieben, the hill being due west.