Another Jake and Polly Mystery/Adventure A coin is found in a core sample of ice in Antarctica. The question is how did it get there? The discovery is only part of the mystery. When famous Anthropologists; Joe and Karol Martino and their children, Jake and Polly discover what is on the back of the coin, they realize that this is something that must be kept secret. Jake and Polly find themselves in the middle of a mystery that puts them and their parents in terrible danger. Traveling to an archaeological dig in Spain to look for answers, they embark on a terrifying adventure that will provide the reader with page-turning, heart-stopping excitement. Together, they are faced with the question: can the secret of the coin be revealed? A great read for the whole family