The third installment of Edith Nesbit's Psammead Trilogy continues to follow the lives of the original five children and their magical endeavors. The children once again encounter the Psammead, but this time they also discover an ancient amulet that contains time-traveling powers and fuels their adventure throughout the novel.

As the children experience different civilizations through time, they meet a multitude of new characters and explore many notable locales such as Atlantis before the flood, Babylon, and the Tin Islands. Profiting greatly from Nesbit's deep research of ancient civilizations, this final installment is a joyous listen for adults and children.