Dark Shaman Awakening

Teenage twins Lynx and Laurel Raven are on a mission. After being told by their grandmother that a family heirloom is missing, the twins head to their uncles house on the Gulf of Finland for a two-week stay, hoping to find the valuable stone tablet that their uncle supposedly snatched from her house. But when their cousins eccentric tutor gives Laurel a strange book to read and their aunt reveals ...