'Their bodies flickered strangely – transparent, blueish, as if they were made of flames. With a jolt, he realised that they were fading. Time was running out.’

Who are the phantom girls? What do they want with Aidan?

Aidan’s village is under siege. A fracking company has moved on to the land.

Once drilling is complete, the paddocks looked after by Aidan’s family will be gone, along with his home and the horse he loves.

Aidan and his best friends Emmi and Jon have one last hope. Legend has it that the warrior queen Boudicca is buried close by. If only they can find the tomb … prove this is the site of her last great battle against Roman invaders …

As the mists of time separating ancient history from present day swirl and fade, Aidan must face a deadly enemy. He must fight to uncover the truth of the ghostly sisters, before it is too late.

The Warrior in the Mist is the latest novel from award-winning children's author Ruth Eastham.