It sounds like you’re referring to a collaborative book titled "The Hidden Library" with multiple co-authors. These types of projects often feature various stories or essays by different writers, each contributing their unique perspective. If you need specific information about the co-authors or the themes they explore in this book, please provide more details!

Despite the great diversity of settings in Tanith Lee's novels--from the pre-historic origins of Christianity to robot-dominated futurescapes--certain underlying thoughts and references appear consistently. While adhering formally to many of the writing conventions of the fantasy, science fiction and horror genres, Lee also engages the meaning of myths of the Greeks (particularly Dionysos), Egyptians, Persians and Indians. The dynamics of magic, alchemy, shamanism, Gnosticism and reincarnation also surface frequently. This critical work examines Lee's highly original applications of such themes and subtexts. Less prominent themes are also covered, as well as her insights into human nature, her humor, her numerous tributes to literature, her comments on writing, her games with space, time and language, and her preoccupation with detail and background. Also included is an interview with Tanith Lee, a bibliography of Lee's work, a general bibliography, and an index.

In a quiet corner of England, Elara stumbles upon an ancient library hidden deep within the crumbling walls of Ashbourne Manor. What begins as an ordinary trip quickly turns extraordinary when a mysterious artifact transports her to the Regency Era. Amid moonlit gardens and grand ballrooms, she meets a captivating nobleman who holds the key to her heart—and the secrets of time itself. But as Elara becomes entangled in a web of time travel stories and forbidden romance, she must choose between the future she knows and a love that transcends time. Will she uncover the truth before it’s too late, or will time pull her apart from the one she loves forever?