High-concept story, lending well into the creepy, unnerving horror is always up my street and this did not disappoint. This throughout was a wonderful concept, executed well, with fantastic performance. The Big Finish debut of Bernice Summerfield was great, and she already cements herself as a good part of the Doctor Who lore well from just this for me - I'm excited to hear more, and read some of her VNAs. The Seventh Doctor in his scheming, and more manipulative demeanour also is good for me - I think these additional layers are always fascinating too.