The Doctor Who - The Sixth Doctor Adventures: Purity Unleashed compact disc collection, published by Big Finish Productions, features a series of English-language stories from the iconic Doctor Who franchise. With a focus on the Sixth Doctor, this collection includes adventures written by authors such as Matthew Sweet, Chris Chapman, Ian Potter, and Helen Goldwyn. Set in the United Kingdom, these stories explore the themes of purity and morality, offering fans of the Doctor Who series a new and exciting chapter in the quest to save the universe.