This introduction to Russian mythology begins with the coming of Christianity to the state of Kievan Rus' at the end of the 10th century, heralding a state of co-existence between pagan and Christian practices that came to be known as "dual faith". The book deals with the mythic beliefs, notions and customs concerning nature, the cult of the dead, demons, witchcraft, the supernatural and more, many of which have their roots in the pre-Christian past, but which continue to survive. The author draws on a rich variety of sources to illuminate the evolution of major themes and motifs, and to give context to the mythology. These include anecdotal narrative forms, religious legends, epic songs, funeral laments, and folk tales.