mark687 and The Brigadier have both put it perfectly. The Mistpuddle Murders is a mashup of Christie and Potter, with a TARDIS team thrown in for good measure, to produce a charmingly bonkers story. Lovely!
I loved that Sarah Sutton is incredibly good (her Tegan is uncanny!), and she reads very similarly to the audiobooks we used to listen to in the car on long drives as kids (especially Roald Dahl books), so the whimsical nature of this story really took me back. A fun and funny story
I have to admit, I’m really struggling with this one. I tried putting it on the other day, but it wasn’t holding my attention and I shut it off about ten minutes in. I started it up again 12 minutes ago and I’m having the same problem. I shouldn’t be having such a hard time with something that’s only half an hour long, so I’m thinking this one might just be a failure to launch (for me).