So this may be an odd question but I'm curious. The production details for Nightmare Country show that it was recored "28 March 2018 and 15-16 January 2019". So....usually with split productions like this it is due to a particular cast member only being available. Would it be anyone in the main cast or is there perhaps a secret sneaky cameo character we could expect? (For example, I recall there being a very large gap for Nightshade, which I can only assume was for the purposes of Carole Anne Ford's cameo).
Perhaps because Mark Strickson is based in New Zealand and only records when he is visiting the UK?