Darkwitch Rising

The Troy Game is a quartet of fantasy novels by Australian author Sara Douglass consisting of four books: Hades' Daughter, God's Concubine, Darkwitch Rising and Druid's Sword. It centres on a group of characters who are reincarnated at the end of each book and take the form of renowned historical figures from different ages. The entire series is set in London and focuses on the characters trying to complete the Troy Game, a kind of spell cast in the first book to protect the city.