War Horse author, Michael Morpurgo has written a new book marking 100 years since the start of the First World War.
He says the idea for 'Listen to the Moon' was inspired by a story from his own family.
Michael said: "There was once in our family a medal, commemorating the sinking of a ship called the Lusitania in May 1915. I learned it had been torpedoed by a German U Boat, in the south of Ireland."
He added: "I discovered that three hours after it sank, the grand piano from the dining room of this luxurious cruise liner was found floating on the sea, with a child still hanging on."
Michael says that was the first idea he had for the new book, which focuses on a young boy Alfie and his fisherman dad.
They find a girl on an uninhabited island in the Scillies - an archipelago off the south western tip of the Cornish coast.
She's hurt, lost, and with no memory of who she is or how she arrived there.
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