Definitely some interesting aspects here (the gorgeous opening shot, the Three Sacred Texts, Sabalom Glitz as the last truly great Holmes-created side character), and I find myself growing fond of the larger Trial Of A Time Lord framing. Between this story arc where the Doctor watches his own show, getting involved in another TV show with Vengeance On Varos, and even directly addressing the audience at the end of The Caves Of Androzani, it's these moments that would become the foundation for his predominantly metafictional lane in the Big Finish audios.

It's just that the actual story here is pretty middling. A mystery that's not much of a mystery, a conflict that's not that compelling, and characters that overall don't leave much of an impact.