Tara and David, time-traveller twins, have been sent on a quest - to save Planet Earth.

Living in the Wye Valley in the 21st century, they visit an archaeological dig site, where they discover a mysterious bronze mirror. It transports them, their reluctant cousin Simone, and their puppy Bethan, to the wild Welsh Marches of the fourteenth century.

Here, they meet Carys and Hugh, whose family desperately need help. Their father's will has been stolen, and hidden in Monmouth Castle. Unless it's found, they will lose their home and their land, within days.

As the children face up to powerful foes, plots and dark secrets come to light. They must crack the code in a spiral of tiles to reveal something precious. Only then can they save the family's fortunes, and begin to save the planet.

In the face of increasing danger, will the Mirror return them to their own time before it's too late?

Rooted firmly in the history of the Borderlands, The Bronze Mirror is a gripping, intriguing adventure which marks the start of an exciting new series.