A mysterious talking cat invites children through the grand doors of the State Library of NSW in Sydney.

It’s the Est Cat, who wants to show them the biggest, the smallest, the strangest, the rarest and the gluggiest objects to be found there! They visit secret places, get followed by ghosts, spy special treasures and finally learn the Est Cat’s secret.

This delightful tale introduces readers to some of the weird and wonderful artefacts of Australian history, where they live, and the people who look after them.