*The Darkness of Glass* is a gripping science fiction novel from the celebrated *Doctor Who: The Fourth Doctor Adventures* series. Authored by Justin Richards, this tale plunges readers into a chilling mystery set in a remote Scottish castle. As the Fourth Doctor and Leela investigate the eerie occurrences linked to an ancient mirror, they uncover dark secrets and face spectral dangers. This atmospheric narrative weaves themes of history, supernatural intrigue, and the timeless battle between good and evil, making it an essential read for fans of the iconic Time Lord's adventures.