JJ Liddy sometimes blames his unreliable temperament on the visit he made to Tir na n'Og, the land of eternal youth, when he was fifteen years old. It's perhaps not surprising that his children have also turned out to be a little eccentric, especially eleven-year-old Jenny. She forgets to go to school, can't bear to wear shoes, and spends entire days roaming the mountainside.

It's up there that she meets the ghost. He is guarding a pile of rocks known as the beacon, and when some archaeologists arrive to excavate it, they run into the strangest kind of obstruction.

But it is not people the ghost fears, and when the real enemy finally reveals itself, the future of the entire human race is threatened. Only Aengus Og and his fairy kin can help now.

Kate Thompson is one of the most exciting authors writing for young people today. A born storyteller, her work is highly original and she is thought provoking in her ideas. She has travelled widely in the USA and India and studied law in London. After living in County Clare, she moved to Kinvara in County Galway and there, she discovered her passion for playing the fiddle. She is now an accomplished player and also has a great interest in restoring instruments.

Kate is the only author to win the Children's Books Ireland Bisto Book of the Year award four times - in 2002 for The Beguilers, in 2003 for The Alchemist's Apprentice, in 2004 for Annan Water and in 2006 for The New Policeman.

The New Policeman also won the Guardian Children's Fiction Prize 2005, the Whitbread Book Award Children's category 2005, the Children's Book of the Year in the Irish Book Awards in March 2006 and has been longlisted for the Carnegie Medal.

In 2008 Kate was again shortlisted for the Children's Books Ireland Bisto Award for her book, The Last of the High Kings, a beautiful and haunting story that delves deep into the magic of Irish myth and folklore.