This one is a tricky one for me to rate. I don’t hate it nor do I like it.
It’s quite a simple one and one I’d argue with some great elements but also a lot of “whatever” aspect to it. I like the Chumblies, but the sounds here get on your nerves really quickly. I like Maaga here, she has a great performance in the only surviving Episode and overall for most of the Serial. I think we have some lovely Vicki Doctor Moments (in particular the one with the rock). But overall it doesn’t do much for me.

Overall this is just meh story, not particular amazing nor bad, some standout moments here and there but definitely one of the weaker Hartnell Tales