The Stone of the Seer — Simon Rose

The Stone of the Seer is an exciting historical fantasy series of adventure novels for young adults, primarily set in the turbulent period of the English Civil War.The Stone of the Seer, book one in the series, features the Vikings, Leonardo da Vinci, and the political turmoil of the 1640s. At Habingdon House, Lady Elizabeth Usborne, Kate, and Tom encounter a magical black stone, mysterious ancient manuscripts, and the incredible time viewing device known as the tempus inpectoris, all while under constant threat from the murderous witchfinder, Daniel Tombes.