This is quite honestly the best conclusion there could have been to this series. There's a great early twist with Cleo being the one still present and Abby and Shawna taken, and the perfect explanation for why Cleo has been unaffected by the psychic virus. The notion of a psychic virus is very clever, given that the Doctor is a woman who inspires many people. It essentially weaponizes her encounters and influence on humanity.

Jodie Whittaker truly excels also in this audio role, proving herself to be the ideal actor for this non-visual format.

I absolutely love that the day is saved by playing a podcast. That, to me, is the most 'Doctor Who' ending you could get to a story like this, and Doctor Who is the only show where that could work.

Interesting that there's a post credits scene with Vastra sending Cleo the Floater via Amazon Logistics (Again, very 'Doctor Who'). Could we get a Series 2? (NB: We did get a Series 2).