A story which highlights Nyssa, her resourcefulness, and handing her more agency then she often had in the main show, and consequently really helped her stand out, and was the best part of the story. I am a big fan of Nyssa, and her dynamic with the Fifth Doctor, which I particularly enjoyed in this story, as Nyssa developed herself more.

Besides Nyssa, there's not too much here. An eerie and atmospheric start, using its characters and location well is always a positive for me, but it lost its way and didn't fully utilise a great setup.