In The Story of the Amulet Nesbit's powers of invention are at their best. It is a time machine story, only the device is not a machine but an Egyptian amulet whose other half is lost in the past. By saying certain powerful words, the amulet becomes a gate through which the children are able to visit the past or future. Pharaonic Egypt, Babylon (whose dotty queen comes back to London with them and tries to get her personal possessions out of the British Museum), Caesar's Britain: they visit them all in the search for the missing part of the amulet.

Nesbit's history is good. And there is even a look at a Utopian future, which turns out to be everything a good Fabian might have hoped for. Ultimately, the amulet's other half is found, and a story of considerable beauty is concluded in a most unexpected way.