Daisy Dunbar and her sister, Lily, travel to Scotland to stay with their Uncle Roy and forbidding Grandmother Morag in the haunted Vipers Castle. Human on the outside, dragon on the inside, Daisy only has two weeks to find the truth behind its hidden secrets and lies. Will she have time or will all be lost? And who - or what - creeps through the moon shadows in the dead of night? Vipers Ruin is the third book in the Daisy Dunbar, Dragon's Daughter series. For ages 10 to 14.